Responsibility of International Organizations and Attribution

Introduction

The responsibility of international organizations is never only a question of institutional accountability. It begins with attribution: the legal process by which an act or omission is connected to the organization itself. An international organization may possess legal personality, exercise autonomous functions, and bear obligations under international law, but it does not act through a natural body of its own. It acts through organs, officials, agents, missions, delegated entities, and, in many operational settings, personnel supplied by States. The central question is whether a specific act can legally be treated as the conduct of the organization, rather than as the conduct of a member State, a national contingent, an individual official, or another legal person.

The modern law of international responsibility was developed primarily around States, yet international organizations now exercise authority in fields that were once associated almost exclusively with sovereign power. The United Nations administers peace operations and sanctions regimes. The European Union adopts binding legal acts implemented by national authorities. Specialized agencies, development banks, regional organizations, and hybrid missions shape decisions affecting territories, individuals, markets, security, and public administration. Since the International Court of Justice recognized the United Nations as possessing international legal personality distinct from its member States, the autonomy of international organizations has carried an unavoidable legal implication: an entity capable of performing international functions may also incur responsibility when its own conduct breaches an international obligation (ICJ, 1949).

The International Law Commission’s Draft Articles on the Responsibility of International Organizations provide the most systematic framework for this field. Their basic structure follows the general logic of international responsibility: an internationally wrongful act exists where conduct is attributable to the organization, and that conduct breaches an international obligation binding on it (International Law Commission, 2011). Attribution is the threshold. Without it, legal analysis becomes imprecise, either by treating international organizations as politically responsible whenever they are involved in an event, or by assuming that member States must answer for all conduct carried out under an institutional mandate.

The difficulty is sharper because international organizations often operate through mixed legal and institutional arrangements. A peacekeeping force may include national troops placed under international command while States retain disciplinary or residual authority. A Security Council resolution may authorize military action without transferring operational control to the United Nations. A regional organization may adopt rules that national courts and administrations apply as domestic acts. In such cases, the visible actor and the legally responsible subject may diverge. Attribution requires attention to function, status, control, authorization, command, and the legal relationship between the organization and the person or entity whose conduct is in question.

This is why the distinction between direct attribution and related forms of responsibility is essential. Conduct by an organ or agent may be attributable when performed in the exercise of institutional functions. Conduct by State organs placed at an organization’s disposal may be attributable to that organization only where effective control exists over the specific act. Conduct not otherwise attributable may still become the organization’s own if it is clearly acknowledged and adopted. Separate rules may also address aid, assistance, direction, coercion, or circumvention involving States and organizations. These distinctions are not technical formalities. They determine whether responsibility attaches to the organization, to a State, to both, or to neither under the available rules.

Judicial practice involving Kosovo, Iraq, Srebrenica, sanctions, and European legal integration shows that attribution can decide the practical reach of responsibility and remedies. Courts and tribunals have had to separate ultimate authority from operational control, authorization from command, institutional decision-making from national implementation, and legal responsibility from political influence. A weak attribution analysis can shield organizations behind immunity, transfer responsibility unfairly to States, or leave injured parties without a meaningful forum. A disciplined approach begins with the specific act, the capacity in which it was performed, the institution that controlled it, the obligation allegedly breached, and the legal consequence that follows.

1. The organization as a responsible legal person

International responsibility presupposes a legal subject capable of bearing obligations under international law. For States, that premise is usually taken for granted. For international organizations, it must be established through legal personality, institutional functions, and the degree of autonomy created by the organization’s constituent instruments. An organization that has no separate legal personality cannot easily be treated as a distinct bearer of responsibility; its acts may instead be reduced to the acts of States acting collectively. Once a separate personality is recognized, however, the legal analysis changes. The organization is no longer a mere diplomatic meeting place. It becomes a legal person through which international functions are exercised and to which international responsibility may attach.

The International Court of Justice’s advisory opinion in Reparation for Injuries remains the starting point for this reasoning. The Court did not treat the United Nations as a State, nor as a simple extension of its members. It reasoned that the Organization had been entrusted with functions and rights that required a distinct international legal personality (ICJ, 1949). That conclusion had consequences beyond the capacity to bring claims. If an organization can act internationally, enter legal relations, and exercise powers conferred by international law, it can also be assessed by legal standards when its conduct is alleged to breach an obligation.

This does not mean that all international organizations have identical powers or identical responsibilities. Their legal personality is functional, not sovereign. A universal organization, a regional integration organization, a development bank, a specialized agency, and a peace operation do not occupy the same institutional position. Their obligations depend on their constituent instruments, applicable treaties, institutional rules, customary law where relevant, and the functions they have been given. Legal personality opens the door to responsibility, but it does not decide the content of every obligation or the attribution of every act.

1.1 Legal personality and institutional autonomy

Legal personality separates the organization from its member States at the level of international law. That separation is essential because international organizations act through human and institutional intermediaries: organs, officials, agents, committees, missions, field personnel, and sometimes personnel supplied by member States. Without legal personality, the conduct of these actors would be difficult to distinguish from the conduct of the States that created, funded, or staffed the institution. With legal personality, international law can ask a more precise question: was the relevant act performed for the organization, within its functions, and under rules that make it legally the organization’s conduct?

The International Law Commission’s Draft Articles on the Responsibility of International Organizations reflect this logic. They define an international organization as an entity established by a treaty or another instrument governed by international law and possessing its own international legal personality (International Law Commission, 2011). The definition is not merely descriptive. It marks the difference between an organization that can bear responsibility as a separate legal person and an arrangement through which States cooperate without creating an autonomous subject of international law.

Institutional autonomy also explains why attribution cannot be reduced to membership. A State may participate in an organization, vote in its organs, finance its budget, or second personnel to its missions. Those connections do not automatically make every act of the organization attributable to the State. The legal personality of the organization creates a juridical distance between institutional conduct and member-State conduct. That distance allows responsibility to attach to the organization itself when the conduct belongs to its own organs or agents, or when other attribution rules connect the conduct to it.

The same point works in the opposite direction. The existence of an international organization does not automatically remove responsibility from States. If a State organ acts under national command, implements an organizational decision through domestic authority, or retains effective control over the specific conduct in question, legal responsibility may remain with the State, may shift to the organization, or may arise for both. Attribution is the doctrine that decides where this boundary falls.

1.2 The limits of separate personality

A separate personality is indispensable, but it is not absolute. International organizations are artificial legal persons created by States or other international actors. They usually depend on member contributions, institutional mandates, delegated powers, and personnel made available by States. Their autonomy is real, but it is structured by the legal instruments and political arrangements that created them. This is why the responsibility of international organizations cannot be analysed as if organizations were simply States under another name.

The tension is most visible in operational settings. A peacekeeping mission may operate under an international mandate while using troops supplied by national governments. A Security Council authorization may permit States to act in pursuit of collective security without placing those States under United Nations command. A regional organization may adopt binding rules that national authorities must implement. In these arrangements, legal personality alone cannot identify the responsible actor. The analysis must examine status, function, authority, and control.

This limitation prevents two errors. The first is treating international organizations as immune political forums whose separate personalities shield them from responsibility. The second is treating member States as automatically responsible for everything an organization does. Both positions are legally weak. A separate personality creates the possibility of organizational responsibility, but it also requires disciplined attribution. The organization must be treated as responsible for its own legally attributable conduct, not for every event linked to its broad institutional activity.

The real difficulty begins where institutional autonomy and State control overlap. That overlap is common in peace operations, sanctions implementation, development administration, regional integration, and delegated public functions. In such cases, the relevant question is not who had general political influence, but whose legal function and control connected the specific act or omission to a particular subject of international law.

2. Responsibility of international organizations as a framework

Responsibility of international organizations is governed by a structured legal framework rather than by general ideas of fairness, accountability, or institutional criticism. The central formulation appears in the ILC Draft Articles: every internationally wrongful act of an international organization entails the responsibility of that organization, and such a wrongful act exists when conduct attributable to the organization constitutes a breach of an international obligation binding on it (International Law Commission, 2011). This formulation gives the analysis two distinct elements: attribution and breach.

The distinction is essential. Attribution identifies the legal subject whose conduct is under examination. Breach asks whether that conduct failed to conform to an obligation binding on that subject. A failure to separate these questions produces analytical confusion. An organization may be politically connected to harmful conduct without that conduct being legally attributable to it. It may also act through its own organs or agents without breaching any applicable international obligation. Responsibility arises only when both elements are satisfied.

The ILC framework is influential because it gives responsibility of international organizations a coherent structure comparable to the law of State responsibility. Yet the comparison has limits. The Articles on State Responsibility rest on much broader practice and a more settled legal tradition. The Draft Articles on the Responsibility of International Organizations operate in a field where practice is thinner, institutional forms vary sharply, and primary obligations are sometimes uncertain. Their value lies in giving legal order to a difficult field, not in eliminating every dispute about attribution, control, or the obligations binding on a particular organization.

2.1 Attribution before breach

Attribution normally comes first because legal responsibility must begin with the identification of the actor. Before asking whether an obligation has been breached, it is necessary to know whose conduct is being assessed. If a national military contingent, an international mission, a State official seconded to an organization, or an institutional organ takes a contested act, the legal system must decide whether that act belongs to the organization, to a State, to both, or to another actor.

This sequence protects the analysis from premature conclusions. A serious harm may occur in an operation authorized by an international organization, but authorization is not the same as attribution. A State may implement an organizational decision, but implementation by national authorities does not automatically make the organization the author of each domestic act. An official may misuse institutional authority, but the misuse may still be attributable if it was performed in an official capacity and within the organization’s overall functions. The order of reasoning matters because each of these scenarios produces a different legal inquiry.

Attribution is also different from causation. An organization may create conditions in which a State acts, influence the political context, approve a mandate, or benefit from an operation. Those facts may be relevant to other forms of responsibility, but they do not by themselves establish that the specific conduct is the organization’s own act. Attribution requires a legal connection between the actor and the organization, usually based on organ status, agency, functional performance, effective control, or acknowledgment and adoption.

This is why attribution is not a technical appendix to responsibility. It is the point at which international law converts institutional activity into legally attached conduct. Without that step, responsibility becomes either too broad, because every institutional connection becomes enough, or too narrow, because organizations can deny responsibility whenever States or individuals physically carried out the act.

2.2 Secondary rules and primary obligations

The rules on responsibility are secondary rules. They do not usually create the substantive obligations that international organizations must obey. Instead, they determine what follows when an obligation binding on the organization is breached. DARIO belongs to this secondary level: it addresses attribution, breach, circumstances precluding wrongfulness, consequences of responsibility, invocation, and responsibility connected with the conduct of States or other organizations.

Primary obligations come from elsewhere. They may arise from the organization’s constituent treaty, headquarters agreements, binding decisions, internal rules, employment obligations, treaty commitments, customary international law where applicable, general principles, human rights standards, humanitarian law in relevant operational contexts, or special legal regimes governing a particular institution. The existence and content of those obligations cannot be assumed merely because the organization has legal personality. They must be identified with attention to the organization’s mandate, powers, membership, practice, and the legal regime in which it operates.

This creates one of the central difficulties in the responsibility of international organizations. Attribution may be conceptually clear in a given case, but breach may remain contested because the underlying obligation is uncertain. Conversely, an obligation may be clear, but the relevant conduct may be difficult to attribute because the organization acted through mixed personnel, national authorities, or member-State implementation. The two elements are connected, but they must not be merged.

A disciplined framework keeps the inquiry precise. First, the organization must be a legal person capable of bearing obligations. Second, the relevant act or omission must be attributable to it under international law. Third, the attributed conduct must breach an obligation binding on that organization at the time of the act. Only after those steps can the analysis move to consequences, reparation, invocation of responsibility, shared responsibility, or possible circumstances precluding wrongfulness.

3. Organs and agents as the basic rule

The ordinary route for attributing conduct to an international organization is through its organs and agents. This rule reflects the practical nature of institutional action. An international organization does not act physically by itself; it acts through persons, offices, bodies, missions, panels, committees, secretariats, administrative units, and other entities charged with carrying out its functions. Attribution connects those acts to the organization when they are performed within the institutional role assigned to the actor.

DARIO expresses this basic rule by treating the conduct of an organ or agent, in the performance of that organ’s or agent’s functions, as the conduct of the organization under international law (International Law Commission, 2011). The rule is necessary because a separate legal personality would have little meaning if an organization could hold rights and powers but avoid responsibility whenever a human being or institutional body carried out the relevant act. Responsibility follows the legal structure through which the organization acts.

The rule also keeps attribution separate from broad political influence. Not every person connected to an organization acts for it in the legal sense. A delegate of a member State, an external contractor, a national official, or a person participating in an institutional process may be linked to the organization without every act being attributable to it. The legal analysis turns on status, function, and the connection between the act and the organization’s assigned activities.

3.1 Organs under the rules of the organization

An organ of an international organization is identified by the rules of that organization. Those rules may include the constituent treaty, statutes, institutional decisions, resolutions, regulations, delegated acts, internal practice, and other instruments that define the organization’s structure. Internal institutional law is not merely administrative. It helps determine who can speak, decide, administer, command, adjudicate, implement, or represent the organization for purposes of international responsibility.

This point is especially important because international organizations are not built according to a single constitutional model. The United Nations, the European Union, the World Health Organization, development banks, regional organizations, and treaty bodies organize authority differently. Some organs are expressly listed in the founding instruments. Others emerge through delegated powers, institutional practice, or decisions adopted under the organization’s rules. Attribution must respect those internal arrangements without allowing an organization to manipulate internal classifications to avoid responsibility.

The legal inquiry is not limited to formal titles. A body may be treated as an organ because the organization’s rules give it institutional status and functions. Once that status exists, acts performed within its functions are capable of being treated as acts of the organization. The question is not whether the organ is politically important, senior, permanent, or visible to the public. The question is whether the organization’s legal order makes that person or entity part of the institutional structure through which the organization acts.

This is why the rules of the organization matter at the attribution stage. They identify institutional capacity. They define functions. They show whether the actor belongs to the organization’s legal architecture or merely interacts with it. For responsibility, that distinction is decisive.

3.2 Agents and functional attribution

The concept of an agent is broader than the concept of an organ. An agent does not need to be a principal organ, a permanent official, or a body named in the constituent instrument. The relevant question is functional: has the person or entity been charged by the organization with carrying out, or helping to carry out, one of its functions? If so, the organization may act through that agent even where the legal relationship is not based on ordinary employment or formal organ status.

The International Court of Justice gave this idea an early foundation in Reparation for Injuries, where it treated the United Nations as capable of acting through persons entrusted with its functions, even if their precise administrative position differed from that of a State official (ICJ, 1949). DARIO later placed the concept into a more systematic framework by defining agents in functional terms and linking attribution to performance of organizational functions (International Law Commission, 2011).

This functional approach is necessary because international organizations often operate through flexible institutional arrangements. They may appoint special representatives, experts, rapporteurs, envoys, administrators, investigators, field staff, claims commissioners, mission personnel, or external bodies assisting in delegated tasks. If attribution were limited to permanent officials or formally named organs, much institutional conduct would fall outside responsibility even though the organization had entrusted the actor with its functions.

At the same time, the concept of agency cannot be expanded without limits. A person does not become an agent merely by cooperating with an organization, receiving funding from it, attending its meetings, or acting consistently with its policy preferences. The organization must have charged that person or entity with carrying out or assisting in an institutional function. Attribution depends on that legal and functional link, not on general association.

3.3 Conduct in the performance of functions

Attribution through organs and agents requires more than status. The relevant act must be connected to the performance of the actor’s functions. This requirement prevents attribution from extending to purely private conduct, accidental association, or acts that have no sufficient institutional connection. A person may be an official or agent of an organization, but not every act by that person belongs to the organization.

The inquiry should focus on capacity and function. Was the actor using institutional authority? Was the act carried out in the course of an assigned task? Did the organization’s rules or mandate provide the framework within which the conduct occurred? Did the affected party encounter the actor as a representative of the organization rather than as a private individual? These questions help separate institutional conduct from conduct merely committed by someone who happens to work for, advise, or assist an organization.

Rank is not decisive. A junior official may bind the organization for attribution purposes if acting within an assigned function, while a senior official may act privately outside institutional capacity. Nor is visibility decisive. A field officer, administrative official, investigator, claims processor, or mission employee may perform conduct attributable to the organization if the act is functionally connected to the organization’s work.

The performance-of-functions requirement gives the basic attribution rule its discipline. It prevents the organization from denying responsibility whenever a person acts through a lower-level office, while also preventing every personal act of an official or agent from being transformed into an act of the organization. The legal focus remains on the function being performed and the institutional capacity in which the act occurred.

4. Ultra vires conduct and institutional risk

International organizations may incur responsibility even when an organ or agent exceeds authority or acts contrary to instructions. This rule reflects a basic principle of institutional risk. When an organization places a person or entity in a position to exercise its functions, it cannot always avoid responsibility by relying on internal limits that were unknown, unclear, or breached during the performance of those functions. International law distinguishes between private conduct and misuse of institutional authority.

DARIO treats conduct as attributable where an organ or agent acts in an official capacity and within the organization’s overall functions, even if that conduct exceeds authority or contravenes instructions (International Law Commission, 2011). The rule does not excuse misconduct. It decides whose misconduct it is for purposes of international responsibility. Internal illegality, disciplinary breach, or violation of instructions may matter within the organization, but it does not automatically sever the link between the actor and the organization.

This rule is especially important for third parties. Individuals, States, contractors, staff members, mission beneficiaries, and affected communities often encounter the organ or agent as the organization’s representative. If responsibility could be defeated whenever the organization later characterized the act as unauthorized, attribution would become too easy to avoid. The better distinction is between conduct carried out through an official function, even improperly, and conduct so detached from institutional capacity that it becomes private.

4.1 Excess of authority

Excess of authority occurs when an organ or agent acts beyond the powers assigned to it. The act may violate internal procedures, exceed a mandate, misuse delegated power, or go further than the actor was legally permitted to go. The fact of excess does not by itself prevent attribution. If the actor was still acting in an official capacity and within the organization’s overall functions, the conduct may remain the conduct of the organization under international law.

The reason is structural. Institutions act through delegated authority. That delegation creates risks that authority may be misused, exceeded, or applied unlawfully. A rule that excluded all excessive acts from attribution would give organizations an incentive to frame wrongful conduct as internal deviation. It would also place an unfair burden on third parties, who may have no access to internal limits on authority.

The distinction between private action and institutional misuse is the key. If an official uses an organizational position, office, mission, document, authority, or operational role to carry out the act, the conduct may retain its institutional character even when it exceeds the actor’s powers. By contrast, an act committed for purely private purposes, outside official capacity and disconnected from the organization’s functions, should not be attributed merely because the person holds an institutional title.

This approach protects both sides of the attribution analysis. It prevents organizations from escaping responsibility through internal classifications, but it does not make them responsible for every personal act of every official or agent. The decisive issue is whether the wrongful conduct arose through the institutional function entrusted to the actor.

4.2 Contravention of instructions

Contravention of instructions presents a related but distinct problem. Here, the organ or agent has been told not to act in a certain way, yet acts contrary to that instruction while still performing an organizational function. International responsibility cannot depend solely on whether the actor obeyed internal orders. If the act was carried out in an official capacity and within the organization’s overall functions, the organization may still be treated as the legal author of the conduct.

This rule does not make instructions irrelevant. Instructions may help define the scope of the actor’s functions, show the limits of delegated authority, or support disciplinary action. They may also matter when assessing fault, internal accountability, or the organization’s response after the event. But an instruction breached by the actor does not automatically transform institutional conduct into private conduct.

The point is clearest in operational settings. A mission official, claims officer, field administrator, investigator, security officer, or institutional representative may act contrary to orders while still using the authority, access, and position provided by the organization. To deny attribution in every such case would allow an organization to externalize the legal consequences of risks created by its own institutional activity.

A careful approach remains necessary. Conduct contrary to instructions should be attributed only where the actor was still acting in an official capacity and within the organization’s overall functions. If the act is entirely personal, fraudulent in a way wholly detached from institutional function, or outside any plausible organizational role, attribution should fail. The rule is not a blanket extension of responsibility. It is a safeguard against the misuse of internal disobedience as a defence to responsibility.

5. Personnel placed at the organization’s disposal

The most contested attribution problems arise when an international organization acts through personnel that legally belong to another subject. This is common where States place troops, police units, experts, judges, administrators, or technical personnel at the disposal of an organization. The individual or unit may serve within an international mission, operate under an institutional mandate, and appear publicly as part of the organization’s activity, while still retaining a legal link with the sending State. Attribution then depends on whether the conduct belongs to the organization, to the contributing State, or potentially to both.

DARIO addresses this situation through a specific rule. The conduct of a State organ, or of an organ or agent of another international organization, placed at the disposal of an international organization, is attributable to the receiving organization if that organization exercises effective control over the conduct in question (International Law Commission, 2011). The rule is narrower than the basic organ-and-agent rule. It recognizes that personnel made available to an organization may remain legally connected to the sending entity, so attribution cannot rest only on participation in an international mission.

This issue exposes the limits of institutional appearance. A soldier wearing a United Nations helmet, a police officer deployed in a field mission, or an expert serving within an international administration may look like part of the organization’s machinery. Appearance is not enough. The legal question is who controlled the specific act or omission that allegedly caused the breach. Attribution in this setting is not about the general mandate of the mission, but about operational authority over the conduct being assessed.

5.1 The effective control test

Effective control is the central test for attributing the conduct of placed-at-disposal personnel to the receiving organization. The test asks whether the organization had actual control over the specific conduct, not merely whether it had a broad mandate, political authority, supervisory powers, or general responsibility for the operation. This is a demanding standard because it links attribution to concrete control rather than institutional association.

The focus on the specific act is essential. A United Nations mission may exercise operational command over a peacekeeping contingent in general, while the contributing State retains disciplinary authority, criminal jurisdiction, administrative control, or influence over certain national decisions. Conversely, a State may retain formal command structures but operate within detailed international instructions. The attribution analysis must examine the conduct at issue: who gave the relevant order, who had the capacity to prevent or correct the act, who controlled the operational context, and which legal subject had authority over the specific decision.

Effective control also prevents an overly broad form of organizational responsibility. If every act performed under an international mandate were automatically attributable to the organization, the contributing State could disappear too easily from the legal picture. That would be artificial where the State retained actual control over the relevant conduct. The same logic prevents the opposite error. A State should not remain solely responsible merely because the personnel were originally State organs if, in the specific situation, the organization exercised the operational control that made the conduct its own.

This test is not always easy to apply. Military operations, field administration, emergency missions, sanctions implementation, and hybrid arrangements often involve overlapping chains of authority. Yet that difficulty is precisely why effective control matters. It forces the analysis to identify the real legal and operational connection between the act and the institution said to be responsible.

5.2 Peacekeeping and multinational operations

Peacekeeping and multinational operations are the clearest settings in which this problem appears. In traditional United Nations peacekeeping, States contribute troops, but the operation is conducted under a United Nations mandate and placed within an international command structure. The United Nations may exercise operational command and control, while troop-contributing States retain important residual powers over discipline, personnel matters, and national contingents. Attribution cannot be resolved by selecting one of these links in the abstract. It depends on the conduct under review.

This differs from operations merely authorized by the Security Council. In such cases, the Council may permit States or coalitions to use force under Chapter VII of the United Nations Charter, but authorization does not automatically place the forces under United Nations command. The authorized forces may remain under national, coalition, or regional command structures. The United Nations may define the legal mandate, set limits, or withdraw authorization, but those powers do not necessarily amount to effective control over each operational act.

The distinction is visible in the case law. In Behrami and Saramati, the European Court of Human Rights treated the relevant conduct in Kosovo as attributable to the United Nations, relying heavily on the Security Council’s ultimate authority over the mission framework (ECtHR, 2007). That reasoning has been widely criticized because ultimate institutional authority is not the same as control over the specific conduct. In Al-Jedda, the same Court took a more restrained approach, holding that internment by British forces in Iraq was attributable to the United Kingdom rather than to the United Nations, despite the Security Council mandate under which the multinational force operated (ECtHR, 2011).

Domestic litigation arising from Srebrenica further shows why peacekeeping attribution cannot be reduced to formal command. The Dutch courts accepted that conduct connected with Dutchbat could be attributed to the Netherlands where the State exercised effective control over the relevant acts, even though the battalion operated within a United Nations peacekeeping framework. The point is not that the State was always responsible, or that the United Nations could never be responsible. The point is that attribution turned on control over the specific conduct, not on the general label attached to the mission.

5.3 Ultimate authority and operational control

The doctrinal danger lies in confusing ultimate authority with operational control. Ultimate authority refers to the broad legal or political power of an international organization over a mission, mandate, or authorization. Operational control concerns the practical authority to direct, prevent, or correct the specific conduct at issue. Attribution based only on ultimate authority risks assigning responsibility to the wrong legal subject.

This confusion is especially tempting in United Nations contexts. The Security Council may create a mandate, authorize force, supervise a mission politically, or retain the power to amend or terminate an operation. Those powers are legally significant. They do not necessarily prove that the United Nations controlled a detention decision, a military order, a failure to protect civilians, a checkpoint operation, or the conduct of a national contingent in a particular incident. Broad authority may explain the legal environment in which the operation occurred, but attribution requires closer analysis.

Reliance on ultimate authority can also create an accountability gap. If conduct is attributed to an international organization because of a general mandate authority, claims may fail because the organization enjoys immunity or because no adequate forum exists. At the same time, the State that exercises practical control may avoid responsibility. The result is not legal clarity, but displacement of responsibility away from the actor who controlled the conduct.

Operational control gives attribution a more disciplined basis. It asks who controlled the act, not who stood at the top of the institutional structure. That approach is better aligned with DARIO’s effective control standard and with the need to preserve both sides of the legal relationship: international organizations should be responsible for conduct they effectively control, and States should not escape responsibility where they remain the real operational authority.

6. Acknowledgment and adoption of conduct

Attribution may also arise where conduct is not otherwise attributable to an international organization but is later acknowledged and adopted by that organization as its own. This is a residual rule. It does not replace the ordinary rules on organs, agents, functions, or effective control. It applies where the initial legal connection is insufficient, but the organization subsequently assumes the conduct in a manner that international law treats as its own act.

DARIO reflects this rule by providing that conduct not attributable under the preceding attribution rules shall nevertheless be considered an act of the organization if, and to the extent that, the organization acknowledges and adopts the conduct in question as its own (International Law Commission, 2011). The wording is restrictive. It requires more than institutional approval, political sympathy, silence, or failure to condemn. The organization must assume the conduct in legal terms, and attribution extends only to the extent of that acknowledgment and adoption.

This rule is significant because international organizations may react to acts performed by persons, missions, member States, or associated entities in ways that alter the legal characterization of their relationship to the act. A later statement, resolution, decision, report, settlement, or institutional position may matter if it crosses the line between commenting on conduct and accepting it as the organization’s own. The threshold must remain high because a loose approach would allow attribution to be built from ambiguous diplomatic language.

6.1 Adoption beyond political approval

Acknowledgment and adoption should not be confused with political endorsement. International organizations often approve, welcome, support, regret, justify, or take note of conduct carried out by States or other actors. Such language may have diplomatic significance, but it does not automatically transform the conduct into the organization’s own act. Legal adoption requires a clearer institutional step.

The distinction protects the integrity of attribution. If general approval were enough, almost any resolution or institutional statement could become a basis for responsibility. That would stretch the residual rule beyond its function. The organization must do more than express agreement with the outcome, defend the policy, or accept the political consequences. It must identify itself with the conduct in a way that indicates legal assumption.

This is particularly relevant in collective security, sanctions, peace operations, and regional integration. An organization may endorse a political process, authorize member action, or support a negotiated settlement without adopting every act performed by the actors involved. Adoption requires a more direct connection: the organization must treat the conduct itself as its own, not merely approve the broader objective with which the conduct was associated.

The phrase “if and to the extent” is also important. Attribution by acknowledgment and adoption may be partial. An organization may accept responsibility for a specific decision, report, administrative act, or operational measure without assuming every surrounding act performed by States, contractors, mission personnel, or other organizations. The legal effect must be measured by the scope of the organization’s own acknowledgment.

6.2 The limited role of later conduct

Later institutional conduct can affect attribution, but it cannot be used casually to rewrite the factual chain of control. If an organization did not control a particular act when it occurred, later statements should not be treated as proof of earlier effective control. Acknowledgment and adoption operate differently. They may create attribution because the organization later assumes the act as its own, not because they prove that the organization controlled the act at the time.

This distinction is necessary for analytical discipline. Effective control looks to authority over the specific conduct when it was performed. Acknowledgment and adoption look to a later legal position taken by the organization. The two routes to attribution should not be merged. If later conduct is used as indirect evidence of earlier control, the analysis must say so. If it is used for adoption, the organization’s legal assumption of the act must be clear.

Silence should be treated with caution. International organizations may fail to condemn, investigate, or correct conduct for political, institutional, or operational reasons. Such failure may be relevant to breach of a separate obligation, especially where the organization had a duty to prevent, supervise, or provide remedies. It should not automatically establish that the organization adopted the original conduct as its own.

The residual rule is valuable precisely because it is limited. It prevents organizations from avoiding responsibility where they expressly assume conduct that would otherwise fall outside attribution. At the same time, it prevents courts and commentators from converting broad institutional reactions into legal authorship. Later conduct matters only when it shows a clear and specific adoption of the act in question.

7. Attribution, breach, and responsibility in connection

Attribution is the ordinary entry point into responsibility, but it is not the only route through which an international organization may incur legal consequences. DARIO also recognizes situations where an organization becomes responsible because of its legal connection to the wrongful act of a State or another international organization. These rules matter because institutional action is often indirect. An organization may not physically carry out the relevant act, yet it may assist, direct, control, coerce, authorize, recommend, or structure the conduct of another legal person in a way that engages its own responsibility.

This distinction prevents the law from becoming artificially narrow. If responsibility depended only on direct attribution, an organization could avoid responsibility by acting through member States or other institutions. At the same time, the distinction prevents overreach. Not every act performed by a member State under an institutional framework becomes the act of the organization. International law separates conduct that is attributable to the organization from responsibility that arises because the organization has contributed legally to another actor’s wrongful act.

The ILC framework addresses this through rules on aid or assistance, direction and control, coercion, and circumvention (International Law Commission, 2011). These rules do not replace attribution. They operate beside it. The act remains the act of the State or organization that commits it, but another organization may incur responsibility because its own conduct contributed to that wrongful act in a legally significant way. The analytical task is to identify which route is being used and what conditions must be satisfied.

7.1 Direct attribution versus connected responsibility

Direct attribution asks whether the relevant act or omission is legally the conduct of the international organization itself. If an organ, agent, mission, or placed-at-disposal personnel acts under the conditions required by the attribution rules, the conduct enters the responsibility analysis as the organization’s own act. The next question is breach: whether that conduct violates an international obligation binding on the organization.

Connected responsibility works differently. The wrongful act may remain attributable to a State or to another international organization, but the first organization may still be responsible for its own role in producing, supporting, or compelling that act. This is the logic behind aid or assistance, direction and control, coercion, and circumvention. The organization is not responsible because the conduct is fictitiously treated as its own. It is responsible because its own contribution to another actor’s wrongful act satisfies a separate rule of responsibility.

Confusing these two routes weakens legal analysis. If a court treats aid or authorization as direct attribution, it may wrongly identify the organization as the author of conduct it did not control. If it treats direct control as mere influence, it may wrongly leave the organization outside responsibility. The difference is especially important in military operations, sanctions regimes, regional integration, financial conditionality, migration cooperation, and delegated administration, where one actor may design or authorize a course of action while another implements it.

The distinction also affects remedies. Where conduct is directly attributable to an organization, the claim is aimed at the organization’s own internationally wrongful act. Where responsibility is connected, the injured party may need to show the organization’s knowledge, control, coercive influence, or circumvention of its own obligations. These are different legal burdens. A serious analysis must not collapse them into a general claim that the organization was “involved.”

7.2 Decisions, authorizations, and recommendations

International organizations often act through decisions addressed to member States or other organizations. Some decisions are binding. Others authorize, recommend, coordinate, endorse, or encourage conduct. These institutional acts may have powerful legal and political effects, but their responsibility consequences depend on their form, content, and connection to the later conduct of the addressee.

DARIO gives special attention to decisions, authorizations, and recommendations that may lead member States or other international organizations to commit acts that would be wrongful if committed by the organization itself (International Law Commission, 2011). This rule is aimed at a particular danger: an organization should not be able to do indirectly, through its members, what it could not lawfully do directly. The legal concern is not ordinary institutional coordination. It is the use of institutional authority to procure, authorize, or facilitate conduct that circumvents an obligation binding on the organization.

A binding decision creates the strongest case. If an organization adopts a decision requiring a member State to commit an act that would be internationally wrongful if committed by the organization, and the decision circumvents an obligation of the organization, responsibility may arise for the organization’s own institutional act. The member State’s conduct may remain its own, but the organization’s decision is not legally neutral. It becomes the mechanism through which the organization seeks to produce the prohibited result.

Authorizations and recommendations require a more careful analysis because they may not compel the addressee in the same way. An authorization may permit conduct without requiring it. A recommendation may influence conduct without legally binding the State. For responsibility to arise, the later conduct of the State or organization must be connected to the authorization or recommendation. The issue is not whether the organization expressed a political preference, but whether its institutional act was a legally relevant cause of conduct that would be wrongful if performed by the organization itself.

This framework is particularly relevant in collective security, sanctions, migration control, financial governance, and regional administration. International organizations may design measures that States implement through domestic law or executive action. Attribution should not be used mechanically to treat every implementing measure as the organization’s own conduct. The more precise question is whether the organization’s decision, authorization, or recommendation created responsibility through its own legal contribution to the wrongful act.

7.3 Circumvention of obligations

The rules on circumvention respond to a structural risk created by international organizations. States create organizations to exercise functions collectively, but institutional separateness can also be used to avoid obligations that would bind an actor acting alone. International law must preserve the autonomy of organizations without allowing that autonomy to become a device for evasion.

For international organizations, the concern is that an organization may use member States or other organizations to achieve a result that would breach an obligation binding on the organization if it acted directly. For States, the mirror concern is that a State may take advantage of an organization’s competence to escape an obligation binding on the State itself. DARIO addresses both sides of this problem through rules directed at responsibility in connection with the act of another legal person (International Law Commission, 2011).

Circumvention is not the same as implementation. A member State may implement an institutional decision because it is legally required to do so, because it agrees with the policy, or because the organization’s legal order assigns implementation to national authorities. That alone does not prove evasion. Circumvention requires a more specific inquiry: was the institutional arrangement used to avoid compliance with an international obligation that would otherwise apply to the actor seeking to benefit from the separation?

This distinction is vital. If every act of implementation were treated as circumvention, the legal autonomy of international organizations would be hollow. Regional integration, peace operations, economic cooperation, technical regulation, and collective security all depend on shared action between organizations and States. The law cannot treat ordinary institutional cooperation as suspect merely because more than one legal person is involved.

Yet the opposite approach would be equally weak. If separateness always defeated responsibility, an organization could design harmful measures and leave member States to execute them, while States could transfer functions to an organization to avoid duties they could not lawfully breach themselves. The better approach is to ask whether the legal structure was used to bypass an obligation, whether the act would have been wrongful for the actor invoking institutional separateness, and whether the connection between the organization and the member-State conduct is strong enough to trigger responsibility.

8. Member States and the institutional veil

The relationship between international organizations and member States also raises the reverse problem: when may a State be responsible in connection with the conduct of an organization? The answer cannot be that membership alone is enough. A State does not become responsible for every act of the United Nations, the European Union, a regional development bank, or a specialized agency merely because it belongs to the institution. Automatic member-State responsibility would contradict the premise of separate legal personality.

The law still recognizes situations where State responsibility may arise. A State may aid or assist an international organization in the commission of an internationally wrongful act. It may direct and control the organization in the commission of such an act. It may coerce the organization. It may use the organization to circumvent its own obligations. It may expressly accept responsibility for the organization’s conduct or lead an injured party to rely on its responsibility (International Law Commission, 2011). These routes are exceptional, but they matter because a separate personality should not protect abuse of institutional form.

The image of an institutional veil is useful only if handled carefully. The veil should not be pierced whenever an organization causes harm or whenever its members exercise political influence. International organizations exist precisely because States pool authority and create legal persons capable of acting in their own name. Yet the veil should not become impenetrable where a State uses the organization as an instrument of evasion, domination, or legally significant reliance. The issue is not membership as such, but the State’s own conduct in relation to the organization’s act.

8.1 Membership is not an automatic responsibility

Membership in an international organization creates legal and political participation, not general guarantor liability. A member State may vote in organs, contribute to budgets, participate in negotiations, appoint representatives, and accept institutional decisions without becoming responsible for every wrongful act committed by the organization. If membership alone were sufficient, a separate legal personality would be reduced to a formal label.

Automatic responsibility would also make institutional cooperation legally unstable. States would hesitate to create or join organizations if membership exposed them to open-ended responsibility for conduct they did not control. This would be especially damaging for universal organizations, regional systems, technical agencies, development banks, and collective security arrangements. International law must allow States to cooperate through institutions without treating every institutional act as a national act of each member.

This does not mean that member States are irrelevant. They may shape mandates, vote for measures, fund activities, second personnel, implement decisions, or exercise influence over institutional conduct. Some of these acts may have legal consequences. The point is narrower: responsibility must be based on a legally recognized connection between the State’s own conduct and the wrongful act, not on membership as a status.

The distinction is also necessary for fairness among members. International organizations often include States with different voting power, financial influence, operational involvement, and legal commitments. Treating all members as automatically responsible would ignore these differences. A State that opposed a decision, lacked control over implementation, or had no role in the wrongful act should not be placed in the same legal position as a State that directed, assisted, or used the organization to avoid its own obligations.

8.2 When the veil may be legally pierced

State responsibility becomes plausible when the State’s own conduct satisfies a recognized rule of responsibility. The clearest situations involve aid or assistance, direction and control, coercion, and circumvention. A State that knowingly assists an organization in committing an internationally wrongful act may incur responsibility for that assistance. A State that directs and controls the organization’s wrongful conduct may incur responsibility because the organization’s act reflects the State’s legally significant domination. A State that coerces an organization into committing an act may also be responsible where the relevant conditions are met.

Circumvention is particularly important. A State should not be able to escape an international obligation by transferring competence to an organization or by causing the organization to do what the State itself could not lawfully do. The legal issue is not the mere delegation of powers. Delegation is a normal feature of institutional life. The issue is the abusive use of the institutional structure to avoid compliance with an obligation binding on the State.

DARIO also recognizes responsibility where a State accepts responsibility for an organization’s act or leads an injured party to rely on its responsibility (International Law Commission, 2011). This route is distinct from control. A State may not have directed the wrongful act, but its conduct may create a legal basis for responsibility if it expressly assumes responsibility or induces reliance. The idea is narrow, but it prevents States from benefiting from representations that create expectations of accountability and then retreating behind the organization’s separate personality.

Piercing the institutional veil should remain exceptional. If applied too readily, it would destroy the legal distinction between organizations and their members. If applied too rarely, it would permit States to hide behind institutions they dominate, manipulate, or use to avoid obligations. The stronger position lies between those extremes: separate personality is the default, but State responsibility may arise where the State’s own conduct supplies the legal basis for aid, control, coercion, circumvention, acceptance, or reliance.

9. Dual attribution and shared responsibility

Attribution is often presented as if it required a choice between two mutually exclusive legal subjects. In the responsibility of international organizations, that assumption is too narrow. The same act may occur within overlapping institutional and national chains of authority. A troop-contributing State may retain disciplinary authority, national command influence, or decision-making power over its personnel, while an international organization may exercise operational control over the mission in which those personnel serve. In such circumstances, responsibility does not have to be allocated on an either-or basis.

Dual attribution means that the same conduct may be legally attached to more than one subject of international law where the facts and applicable rules justify that result. The point is not to multiply responsibility artificially. It is to avoid false simplicity in settings where more than one actor exercises legally relevant authority over the same act. Peacekeeping, military support, sanctions implementation, border cooperation, financial conditionality, and delegated administration all create situations where organizational authority and State authority may operate at the same time.

Shared responsibility may also arise through different legal routes. One actor may be responsible because the conduct is directly attributable to it. Another may be responsible because it aided, directed, controlled, coerced, or used the first actor to circumvent an obligation. The legal basis may differ, but the result may still be the responsibility of more than one actor. This is why attribution should not be treated as a device for forcing responsibility into a single institutional box.

9.1 Why attribution need not be exclusive

Nothing in the logic of international responsibility requires attribution to be exclusive in every case. A single factual act can have more than one legal character. It may be carried out by a person who is simultaneously embedded in a national structure and an international mission. It may occur under an international mandate while remaining subject to national instructions. It may implement an organizational decision through a domestic organ. Where both legal relationships are operative, the law should not presume that one necessarily cancels the other.

The mistake is to treat attribution as a search for the one actor most closely connected to the event. That approach may be attractive because it appears clear, but it can distort the legal reality of international operations. A detention decision, a failure to protect civilians, an administrative measure, or an enforcement action may reflect both organizational instructions and national authority. If each actor satisfies a recognized attribution rule, the same conduct may be attributable to both.

This is especially relevant in peace operations. National contingents may be placed under international operational command, but the sending State may retain powers over discipline, withdrawal, criminal jurisdiction, logistics, and certain national instructions. The practical chain of command may shift during a crisis. A specific act may be influenced by mission command, national authorities, and local commanders at the same time. Treating attribution as exclusive may allow one actor to escape responsibility despite having exercised real control.

Dual attribution also avoids an artificial gap between legal personality and operational reality. A separate personality means that an international organization is distinct from its member States. It does not mean that responsibility must always be separated into isolated compartments. Where legal authority is shared, responsibility may also be shared. The decisive question remains whether the conditions for attribution or connected responsibility are satisfied for each actor.

9.2 Effective control by more than one actor

Effective control is often discussed as if it identifies a single controlling subject. In practice, more than one actor may exercise effective control over the same conduct, although the threshold should remain demanding. The organization may control the mission mandate, operational orders, reporting lines, and immediate deployment. The contributing State may control national instructions, personnel discipline, withdrawal, criminal accountability, or final decisions in a particular crisis. If both forms of control bear directly on the act in question, dual attribution becomes legally plausible.

The focus must remain on the specific conduct. General influence is not enough. A State does not exercise effective control merely because the personnel are its nationals or remain part of its armed forces. An organization does not exercise effective control merely because the operation takes place under its flag or mandate. The legal test asks whether each actor had actual authority over the relevant act or omission. Where both did, responsibility should not be forced into a single channel.

The Dutch Srebrenica litigation illustrates the importance of this point. The conduct of Dutchbat occurred within a United Nations peacekeeping operation, yet Dutch courts found that specific conduct could be attributed to the Netherlands, where the State exercised effective control over the relevant decisions. The reasoning did not depend on denying the international character of the mission. It depended on identifying control over the concrete act during the relevant period (Supreme Court of the Netherlands, 2013).

This approach is stronger than a categorical rule. It avoids saying that all conduct in a peacekeeping mission belongs to the United Nations, and it avoids saying that all conduct of national troops remains with the sending State. Both claims are too crude. Effective control requires a closer inquiry into the moment, decision, order, omission, and institutional relationship that produced the contested act.

Dual attribution should still be used carefully. If applied loosely, it may become a way of assigning responsibility to every actor connected to an operation. That would weaken the discipline of attribution. The better position is narrower: dual attribution is justified where more than one legal subject exercised legally relevant control over the same conduct, or where one subject’s direct responsibility and another subject’s connected responsibility operate together.

10. Case law as a field of contested attribution

Case law on the responsibility of international organizations has developed unevenly because many disputes arise before courts whose jurisdiction is limited, indirect, or shaped by immunity. Courts often confront the conduct of States acting under international mandates rather than claims directly against the organization itself. This has made attribution a field of contested reasoning. Judges must decide whether conduct belongs to a State, to an international organization, to both, or to neither in a way that allows adjudication.

The leading cases do not form a perfectly coherent line. They show the difficulty of applying attribution rules in situations where international authority, national implementation, operational control, and access to remedies overlap. The cases also reveal a tension between doctrinal precision and institutional consequences. Attributing conduct to an international organization may reflect the formal mandate, but it may also place the claim beyond effective judicial review if the organization enjoys immunity. Attributing conduct to a State may preserve access to a court, but it risks distorting responsibility if the State did not control the relevant act.

The value of the case law lies less in a single formula than in the contrasts it exposes. Behrami and Saramati emphasized ultimate authority. Al-Jedda moved toward a more careful distinction between authorization and attribution. The Srebrenica litigation focused on effective control over specific conduct. Bosphorus and Kadi show how regional integration complicates the boundary between organizational obligations and State implementation. Each case tests the same basic problem: how to identify the legal author of conduct in an institutional system built on shared authority.

10.1 Behrami and Saramati

Behrami and Saramati are concerned with acts connected to the international presence in Kosovo after Security Council Resolution 1244. The European Court of Human Rights treated the relevant conduct as attributable to the United Nations because the Security Council retained ultimate authority and control over the mission framework (ECtHR, 2007). That conclusion made the applications inadmissible before the Court, since the United Nations was not a party to the European Convention on Human Rights.

The decision has been heavily criticized because it relied on ultimate authority rather than effective control over the specific conduct. The Security Council created and supervised the international framework in Kosovo, but that did not necessarily mean that the United Nations controlled each operational act carried out by KFOR or by actors operating under the mission structure. The reasoning moved too quickly from legal mandate to legal attribution.

The problem is not that the United Nations responsibility was impossible. The problem is that attribution requires a more precise connection between the organization and the act. A broad Security Council mandate may explain the legal environment, but it does not automatically show who controls a failure to clear unexploded ordnance, a detention decision, or a military measure on the ground. Effective control requires closer attention to operational command and the actor’s real authority over the conduct.

Behrami and Saramati remain important because it shows the consequences of loose attribution. By attributing conduct to the United Nations through ultimate authority, the Court removed the case from the European human rights system without providing an alternative forum against the organization. The result illustrates how attribution can shape not only responsibility, but also access to remedies.

10.2 Al-Jedda

Al-Jedda concerned the detention of an individual by British forces in Iraq during a multinational operation authorized by the Security Council. The United Kingdom argued that the detention should be attributed to the United Nations rather than to the United Kingdom. The European Court of Human Rights rejected that argument and held that the internment was attributable to the United Kingdom (ECtHR, 2011).

The case is important because it moved away from treating Security Council authorization as equivalent to United Nations attribution. The Council had authorized the multinational force, but the relevant forces were not transformed into United Nations organs. Nor did the United Nations exercise operational control over the specific detention. The State carrying out the measure remained the actor whose conduct was legally in question.

Al-Jedda shows why authorization and command must be kept separate. An international organization may authorize a State to act, define the legal framework, or recognize the role of a multinational force. Those facts do not automatically transfer attribution from the State to the organization. If the State retains operational control over the personnel and the act, the conduct remains attributable to the State unless another attribution rule applies.

The decision is also significant because it avoids the accountability gap created by excessive reliance on ultimate authority. If the conduct had been attributed to the United Nations merely because the Security Council authorized the operation, the applicant would have faced the barrier that the United Nations was outside the Convention system. By focusing on the State’s own control, the Court preserved the distinction between international authorization and national responsibility.

10.3 Nuhanović and Srebrenica

The Dutch litigation arising from Srebrenica provides one of the clearest examples of effective control in practice. The cases concerned conduct by Dutchbat, a Dutch battalion serving within the United Nations Protection Force during the fall of Srebrenica in 1995. The central question was whether specific acts connected to the removal of individuals from the Dutchbat compound could be attributed to the Netherlands, despite the United Nations peacekeeping framework.

The Dutch courts accepted that the relevant conduct could be attributed to the Netherlands where the State exercised effective control over the specific acts. This reasoning did not deny that Dutchbat operated under a United Nations mandate. It recognized that, at the relevant moment, national authorities could exercise control over the conduct in question. The Supreme Court confirmed that attribution may depend on effective control over the specific conduct rather than on the general institutional setting (Supreme Court of the Netherlands, 2013).

The Srebrenica litigation is analytically valuable because it resists categorical reasoning. It does not stand for the proposition that all conduct of national contingents remains attributable to the sending State. Nor does it stand for the proposition that United Nations peacekeeping automatically absorbs national responsibility. It shows that attribution may turn on a precise factual and legal inquiry into who controlled the act at the decisive moment.

The litigation also supports the possibility of dual attribution. If both the United Nations and a contributing State exercise relevant control over the same conduct, responsibility should not be excluded for one actor merely because the other is also involved. The Srebrenica cases are a reminder that peacekeeping command structures can shift under pressure, especially when local commanders, national authorities, and international mission leadership interact during a crisis.

10.4 Bosphorus and Kadi

Bosphorus and Kadi arise in the European context, but they are relevant because they show how attribution problems appear when member States implement obligations linked to an international or regional legal order. In the Bosphorus, Ireland impounded an aircraft to comply with European Community obligations implementing sanctions connected to the former Yugoslavia. The European Court of Human Rights treated Ireland’s conduct as State conduct, while applying a presumption of equivalent protection because Ireland was implementing obligations flowing from European Community law (ECtHR, 2005).

Bosphorus did not treat national implementation as automatically attributable to the European Community. The domestic act remained Ireland’s act for Convention purposes, even though Ireland was acting under obligations generated by a separate legal order. The case illustrates the distinction between the source of an obligation and the attribution of the implementing conduct. A State may act because organizational law requires it to act, but the act may still be the State’s own conduct in the legal system before the court.

Kadi exposed a different side of the problem. The Court of Justice of the European Union reviewed EU measures implementing United Nations Security Council sanctions and insisted on the autonomy of the EU legal order in protecting fundamental rights (CJEU, 2008). The issue was not simply attribution in the DARIO sense, but the case shows how international obligations can pass through organizational and regional legal structures before reaching individuals. Each level may claim legal authority, but responsibility and judicial review depend on identifying the legal act being challenged.

Bosphorus and Kadi show that regional integration creates attribution problems distinct from peacekeeping. National courts and administrations may apply organizational law without becoming organs of the organization. Regional institutions may implement global obligations without becoming mere agents of the United Nations. The legal analysis must identify the act under review, the legal order in which it was adopted, and the actor whose authority gave it effect. Without that discipline, implementation, attribution, and responsibility become confused.

11. Remedies, immunity, and the accountability gap

Attribution identifies the legal subject to which conduct belongs, but it does not guarantee that an injured party will obtain a remedy. This is one of the most persistent weaknesses in the responsibility of international organizations. A court may have strong reasons to conclude that conduct is attributable to an organization, yet the organization may enjoy immunity from national jurisdiction, fall outside a regional human rights system, or lack an internal remedial mechanism capable of providing effective relief. The result is a gap between legal responsibility as a doctrinal proposition and accountability as a practical outcome.

This gap is visible in fields where international organizations exercise operational or administrative authority over individuals. Peacekeeping missions may affect physical security, detention, property, and movement. Sanctions regimes may restrict assets and travel. International administrations may make decisions with direct consequences for residents of a territory. Employment disputes inside organizations may affect staff members who cannot easily use domestic courts. In each setting, attribution to the organization may be legally coherent while the available forum remains weak or absent.

Immunity makes the problem sharper. International organizations are often protected from domestic jurisdiction so they can perform their functions independently of member-State interference. That rationale has legal force, especially for universal organizations whose work depends on institutional autonomy. Yet immunity can become harsh when individuals harmed by institutional conduct have no alternative process. Cases such as Mothers of Srebrenica show how immunity may block claims even where the underlying facts involve grave harm and serious allegations connected to peacekeeping failure (ECtHR, 2013).

The accountability gap should not be solved by weakening the attribution doctrine. If the conduct is properly attributable to an organization, a court should not pretend that a State is the legal author merely to create an available defendant. Equally, courts should not attribute conduct to an organization too readily when a State exercises effective control, since that would allow States to hide behind institutional immunity. The stronger answer is not doctrinal manipulation, but a more honest separation between attribution, jurisdiction, immunity, and remedies.

11.1 Attribution without an available forum

The fact that conduct is attributable to an international organization does not mean that a claimant has access to a court capable of deciding the claim. International organizations are not parties to most human rights treaties in the same way as States are. Many do not accept compulsory jurisdiction before international courts. Domestic courts often dismiss claims on immunity grounds. Internal mechanisms, where they exist, may be limited to staff disputes or administrative claims and may not cover third-party victims of field operations.

This creates a serious practical problem. A person affected by a peacekeeping operation, sanctions listing, territorial administration, or institutional failure may be told that the relevant conduct belongs legally to the organization, but that the organization cannot be sued in the forum available to the claimant. Attribution then performs its doctrinal function while leaving the injured party without an effective remedy. The legal system identifies the author of the conduct but offers no direct path to enforce responsibility.

The problem is not confined to military or security contexts. International organizations also make employment decisions, procurement decisions, development-related decisions, and administrative determinations that may affect private parties. Staff members may have access to internal tribunals, but those mechanisms are not always available to external victims. Contractors, local residents, beneficiaries of missions, or individuals affected by institutional operations may fall into a weaker remedial position.

This gap has led courts to examine whether immunity remains acceptable where no reasonable alternative means of redress exist. The European Court of Human Rights has considered the availability of alternative dispute mechanisms in cases involving organizational immunity, especially in employment disputes (ECtHR, 1999). Even so, the existence of that inquiry has not produced a general solution for third-party claims arising from peacekeeping, sanctions, or field operations. The structural problem remains: attribution may identify responsibility more easily than the legal system can enforce it.

11.2 The danger of outcome-driven attribution

The lack of an available remedy creates pressure on courts to shape attribution around jurisdictional outcomes. That pressure is understandable, but legally dangerous. A court may be tempted to attribute conduct to a State because the State is within its jurisdiction, even where the relevant conduct was controlled by an international organization. Another court may attribute conduct to an organization because the organization’s broad mandate appears dominant, even where a State retained operational control over the specific act. Both moves distort the law.

Outcome-driven attribution weakens the discipline of international responsibility. Attribution should be based on status, function, control, acknowledgment, adoption, or another recognized legal rule. It should not be based on which defendant is available, which forum has jurisdiction, or which route produces a more sympathetic remedy. Access to justice is a serious concern, but it cannot justify treating the wrong legal subject as the author of conduct.

The opposite error is equally serious. Courts should not use organizational attribution as a way to avoid adjudicating State conduct. If a State retains effective control over a detention, military operation, expulsion, administrative decision, or failure to protect, the existence of an international mandate should not automatically remove State responsibility. Security Council authorization, participation in a peacekeeping framework, or implementation of organizational decisions does not by itself erase national control.

The better approach is disciplined separation. Attribution should identify the legal author of the conduct. Jurisdiction should determine whether a court may hear the claim. Immunity should determine whether the defendant is protected from suit. Remedies should be addressed through the legal mechanisms available against the responsible subject. Confusing these stages may produce short-term procedural convenience, but it damages the coherence of responsibility of international organizations and State responsibility alike.

12. The unfinished authority of DARIO

DARIO is the most developed framework for the responsibility of international organizations, but its authority is not identical to that of the Articles on State Responsibility. The Articles on State Responsibility were built over a longer period, on broader practice, and have been widely cited by courts and tribunals as reflecting many rules of customary international law. DARIO, adopted by the International Law Commission in 2011, operates in a younger and less settled field (International Law Commission, 2011). Its influence is substantial, but its status must be used with care.

This does not make DARIO weak or disposable. Without it, the law of responsibility of international organizations would be far less coherent. The Draft Articles provide a structured vocabulary for attribution, breach, circumstances precluding wrongfulness, reparation, invocation, and responsibility in connection with the conduct of States or other organizations. They also prevent analysis from relying only on analogies to State responsibility, which can be misleading when applied to entities that are functional, derivative, and institutionally diverse.

The unfinished quality of DARIO lies in the field it governs. International organizations differ more radically from one another than States do. Their powers are conferred rather than inherent. Their obligations are often tied to specialized mandates. Their practice is uneven. Many disputes never reach courts because of immunity or jurisdictional limits. For that reason, some provisions of DARIO are better understood as codification of existing tendencies, while others involve a measure of progressive development.

A strong analysis should treat DARIO as authoritative but not conclusive on every point. Its rules provide the starting framework, especially on attribution and responsibility in connection with another actor’s conduct. Yet courts, scholars, and practitioners must still test those rules against the organization’s mandate, its internal law, operational practice, applicable primary obligations, and the facts of the specific dispute. DARIO gives the structure; it does not remove the need for legal judgment.

12.1 Codification and progressive development

The International Law Commission’s work often combines codification and progressive development. Codification seeks to restate rules already grounded in international practice and opinio juris. Progressive development proposes rules that respond to legal needs but may not yet be fully settled in practice. DARIO contains elements of both. Some provisions draw closely on the logic of State responsibility. Others address institutional arrangements where practice is limited or contested.

This mixed character is especially visible in the responsibility of organizations in connection with the acts of States, and in the responsibility of States in connection with the acts of organizations. These rules respond to real problems created by institutional cooperation, but the number of judicial decisions and clear institutional practice remains smaller than in the law of State responsibility. The scarcity of practice does not make the rules irrelevant. It means they should be applied with precision and supported by careful reasoning.

The same caution applies to attribution. The basic rule on organs and agents rests on a strong functional logic. The rule on personnel placed at the disposal of an organization is more sensitive because it depends on effective control over specific conduct, a standard that courts have applied unevenly. The contrast between Behrami and Saramati, Al-Jedda, and the Srebrenica litigation shows that the same general vocabulary can produce different outcomes when courts disagree about control, authority, and institutional command (ECtHR, 2007; ECtHR, 2011; Supreme Court of the Netherlands, 2013).

DARIO should be used as a disciplined framework rather than as a shortcut. Where a rule reflects settled practice, it can be stated with greater confidence. Where it reflects progressive development or limited practice, the analysis should acknowledge the uncertainty. That approach is more persuasive than either treating DARIO as binding law in every detail or dismissing it because it remains formally a set of draft articles.

12.2 The diversity of international organizations

One of the greatest challenges for DARIO is the diversity of international organizations. The United Nations is not structured like the European Union. The European Union is not comparable to a development bank. Specialized agencies, regional organizations, treaty bodies, financial institutions, technical organizations, and hybrid missions operate under different mandates, legal instruments, decision-making procedures, and relationships with member States. A single attribution model must be general enough to function across this variety without erasing the differences that matter.

The definition of an international organization in DARIO focuses on establishment by treaty or another instrument governed by international law and possession of international legal personality (International Law Commission, 2011). That definition is necessary, but it does not tell us how each organization acts in practice. Some organizations exercise regulatory powers. Some provide technical assistance. Some conduct field operations. Some administer funds. Some adopt binding decisions. Others rely mostly on recommendations or coordination. Attribution must be sensitive to these institutional forms.

The problem is especially acute in operational organizations. A peacekeeping mission, an international territorial administration, or a sanctions committee may affect individuals directly. A development bank may act through loans, safeguards, conditionality, and project supervision. A regional integration organization may bind States through legal acts that national authorities implement. In each case, the connection between the organization’s decision and the final act may differ. Applying the same words without examining the institutional setting would produce false precision.

This diversity also affects the meaning of control. Control in a military operation is not the same as control in a financial programme, a regulatory regime, or an employment dispute. Operational command, legal supervision, budgetary influence, voting power, administrative review, and policy conditionality are not interchangeable. A careful attribution analysis must identify the type of authority relevant to the specific act rather than treating all institutional influence as effective control.

12.3 The scarcity of primary obligations

The responsibility of an international organization requires both attribution and breach. Attribution may show that conduct belongs to the organization, but a breach requires identification of an international obligation binding on that organization. This second element is often harder than it appears. Unlike States, international organizations do not possess general sovereignty or a uniform bundle of international obligations. Their duties depend on their functions, instruments, practice, and the legal regimes applicable to them.

Some obligations may arise from constituent treaties, headquarters agreements, privileges and immunities agreements, staff regulations, internal rules, or binding decisions. Others may arise from treaties to which the organization is a party, from customary international law where applicable, or from general principles. In operational settings, human rights and humanitarian law may be invoked, but their precise application to international organizations remains contested in some contexts. The legal personality of an organization does not automatically answer which primary norms bind it.

This scarcity or uncertainty of primary obligations affects the whole responsibility analysis. A claimant may establish a plausible case that the conduct of an organ, agent, or mission is attributable to the organization, yet still face difficulty proving breach if the underlying obligation is unclear. Conversely, a court may recognize a strong human rights or humanitarian concern but hesitate because the organization’s direct legal obligations are contested or because the organization is not party to the relevant treaty.

The point is not that international organizations operate outside the law. It is their responsibility that cannot be assumed by analogy alone. Each case requires identification of the organization’s legal personality, the attributable conduct, the primary obligation binding on the organization at the relevant time, and the way in which the conduct failed to conform to that obligation. DARIO clarifies the secondary rules, but the primary-law question remains one of the most difficult parts of the field.

Also read

• International Responsibility in Public International Law

• State Responsibility in International Law

• The Subjects of International Law

• Customary International Law: How It Forms and Works

• Jus cogens and the hierarchy of international norms

• Principles Of Jurisdiction In International Law

• Immunity of State Officials in International Law

• US v. Iran Hostage Case: Diplomacy, State Responsibility

13. Attribution as institutional legal judgment

Attribution is not a mechanical search for the actor who appeared most visible at the scene of the event. Nor is it a political judgment about which institution seems most blameworthy. It is a legal judgment about whether a specific act or omission should be treated as the conduct of an international organization, a State, both, or another legal person under the secondary rules of international responsibility. That judgment requires attention to legal personality, institutional function, effective control, and the form through which the relevant authority was exercised.

This point is essential because international organizations often operate through layered arrangements. A decision may be adopted at the institutional level, implemented by member States, administered by field personnel, supervised by an international mission, and challenged before a national or regional court. The question is not which actor was politically connected to the broader situation. The question is whose conduct is legally under examination at the moment the alleged breach occurred.

The strongest attribution analysis avoids two shortcuts. The first is formalism: treating the legal label attached to a mission, mandate, or institution as decisive without examining the specific act. The second is factual reductionism: looking only at the person who physically performed the act without asking whether that person was acting as an organ, agent, placed-at-disposal personnel, or State official. Attribution requires both legal form and factual control. Either element, taken alone, can mislead.

DARIO provides the framework for this judgment, but it cannot remove the need for careful reasoning in each case (International Law Commission, 2011). Organs and agents raise one kind of inquiry. Personnel placed at the disposal of an organization raise another. Acknowledgment and adoption operate through a different route. Responsibility in connection with the act of another legal person requires yet another analysis. The discipline lies in choosing the right rule for the right legal relationship.

13.1 Control, function, and legal form

Three ideas recur throughout the law of attribution: control, function, and legal form. Each answers a different question. Function asks whether the actor was carrying out an institutional task for the organization. Control asks who had authority over the specific conduct. Legal form asks how the actor, act, mission, or decision is positioned within the relevant legal order. None of these tests should be turned into a universal shortcut.

Function is central for organs and agents. If an official body, mission, or entity acts in the performance of functions assigned by the organization, the conduct may be attributable to the organization even if the actor is not senior or politically prominent. The inquiry is institutional, not hierarchical. A low-level field officer may act for the organization if carrying out an assigned function, while a senior figure may act outside attribution if the conduct is private or disconnected from the organization’s functions.

Control is decisive where personnel legally belonging to a State or another organization are placed at the disposal of an international organization. In that setting, function alone is not enough because the actor may remain connected to the sending State. The effective control test asks who controlled the specific conduct, not who had the broadest mandate or the highest political authority. This is why the distinction between ultimate authority and operational control is central in peacekeeping and multinational operations.

Legal form still matters. Constituent instruments, institutional rules, resolutions, mandates, internal regulations, and established practice help identify organs, agents, functions, powers, and relationships between the organization and its members. Yet legal form must be read with operational reality. A mandate does not automatically prove control, and national status does not automatically defeat organizational attribution. Attribution is strongest when legal form, institutional function, and actual control point are in the same direction.

13.2 Responsibility without simplification

The law of responsibility should resist simplified claims about international organizations and member States. One weak position says that organizations should always be responsible for operations conducted under their authority. That approach overstates institutional responsibility and ignores the fact that member States may retain operational command, disciplinary power, domestic implementation authority, or effective control over the specific act. Broad authority is not the same as legal authorship.

The opposite position is equally weak. It says that States should always remain responsible for the acts of their personnel, even when those personnel operate under the effective control of an international organization. That view underplays separate legal personality and makes organizational responsibility too difficult to establish. If an organization directs the specific conduct through its own institutional functions and control, responsibility should not be denied merely because the actor originally belonged to a State.

A disciplined approach begins with the specific act or omission. It asks who performed it, in what capacity, under which institutional function, subject to whose control, and within which legal framework. It then separates direct attribution from connected responsibility. A State may remain responsible for its own conduct. An organization may be responsible for conduct attributable to it. Both may be responsible where dual attribution or separate responsibility mechanisms are satisfied. Neither should be held responsible solely because of political association, membership, mandate language, or institutional proximity.

This approach is less dramatic than broad claims about institutional accountability, but it is legally stronger. It recognizes that international organizations are neither empty forums nor sovereign States in another form. They are functional legal persons acting through institutional structures that often depend on member-State participation. Responsibility must follow that structure with precision. It should not be expanded to satisfy political expectations, and it should not be narrowed to protect institutional convenience.

Conclusion

The responsibility of international organizations cannot be understood without attribution. Attribution determines whether a specific act or omission belongs legally to the organization, to a State, to both, or to another actor. It is the point where a separate legal personality becomes operational. Without attribution, institutional responsibility remains abstract; with careless attribution, responsibility becomes distorted.

The central difficulty is that international organizations rarely act alone. They act through organs, officials, agents, missions, member-State personnel, national administrations, implementing authorities, and other institutions. This makes the law of responsibility both necessary and demanding. Legal personality explains why an organization can bear responsibility. Attribution explains when the relevant conduct is its own. Breach then asks whether that conduct violated an obligation binding on the organization.

The most persuasive analysis avoids categorical answers. International organizations are not responsible for every act connected to their mandates, and member States are not responsible for every act performed by personnel they contributed. Responsibility may attach to the organization, to the State, to both, or to neither, depending on function, control, legal form, acknowledgment, adoption, and the rules governing responsibility in connection with another actor’s conduct.

The accountability gap remains serious. Attribution to an international organization may identify the correct legal subject while leaving victims without a realistic forum because of immunity, jurisdictional limits, or weak remedial mechanisms. That problem should not be ignored, but it should not be solved by manipulating attribution. A coherent legal system must distinguish the responsible subject, the court’s jurisdiction, the effect of immunity, and the availability of remedies.

Responsibility in this field is not about blaming institutions in general. It is about attaching a specific act or omission to the correct legal person under international law. That is why attribution is not a technical afterthought. It is the central legal judgment through which institutional personality, operational control, member-State involvement, and access to remedies meet.

References

1. Court of Justice of the European Union (2008) Kadi and Al Barakaat International Foundation v Council and Commission, Joined Cases C-402/05 P and C-415/05 P, Judgment of 3 September 2008 [online]. Available at: https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=celex%3A62005CJ0402 (Accessed: 22 June 2026).

2. European Court of Human Rights (1999) Waite and Kennedy v Germany, Application no. 26083/94, Judgment of 18 February 1999 [online]. Available at: https://hudoc.echr.coe.int/eng?i=001-58912 (Accessed: 22 June 2026).

3. European Court of Human Rights (2005) Bosphorus Hava Yolları Turizm ve Ticaret Anonim Şirketi v Ireland, Application no. 45036/98, Judgment of 30 June 2005 [online]. Available at: https://hudoc.echr.coe.int/fre?i=001-69564 (Accessed: 22 June 2026).

4. European Court of Human Rights (2007) Behrami and Behrami v France and Saramati v France, Germany and Norway, Applications nos. 71412/01 and 78166/01, Decision of 2 May 2007 [online]. Available at: https://hudoc.echr.coe.int/eng?i=001-80830 (Accessed: 22 June 2026).

5. European Court of Human Rights (2011) Al-Jedda v the United Kingdom, Application no. 27021/08, Judgment of 7 July 2011 [online]. Available at: https://hudoc.echr.coe.int/eng?i=001-105612 (Accessed: 22 June 2026).

6. European Court of Human Rights (2013) Stichting Mothers of Srebrenica and Others v the Netherlands, Application no. 65542/12, Decision of 11 June 2013 [online]. Available at: https://hudoc.echr.coe.int/eng?i=001-122255 (Accessed: 22 June 2026).

7. International Court of Justice (1949) Reparation for Injuries Suffered in the Service of the United Nations, Advisory Opinion of 11 April 1949 [online]. Available at: https://www.icj-cij.org/case/4 (Accessed: 22 June 2026).

8. International Law Commission (2011) Draft articles on the responsibility of international organizations [online]. Available at: https://legal.un.org/ilc/texts/instruments/english/draft_articles/9_11_2011.pdf (Accessed: 22 June 2026).

9. International Law Commission (2011) Draft articles on the responsibility of international organizations, with commentaries [online]. Available at: https://legal.un.org/ilc/texts/instruments/english/commentaries/9_11_2011.pdf (Accessed: 22 June 2026).

10. Jorritsma, R. (2021) International responsibility and attribution of conduct: an analysis of case law on human rights and humanitarian law. Maastricht: Maastricht University. Available at: https://doi.org/10.26481/dis.20210910rj (Accessed: 23 June 2026).

11. Kuijper, P.J. (2010) ‘Introduction to the symposium on responsibility of international organizations and of (member) states: attributed or direct responsibility or both?’, International Organizations Law Review, 7(1), pp. 9–33. Available at: https://www.eui.eu/Documents/DepartmentsCentres/AcademyofEuropeanLaw/CourseMaterialsUL/UL2010/Kuijper/KuijperReading6.pdf (Accessed: 23 June 2026).

12. Möldner, M. (2012) ‘Responsibility of international organizations – introducing the ILC’s DARIO’, Max Planck Yearbook of United Nations Law, 16, pp. 281–328. Available at: https://www.mpil.de/files/pdf4/mpunyb_06_Moeldner_161.pdf (Accessed: 23 June 2026).

13. Nollkaemper, A. (2011) ‘Dual attribution: liability of the Netherlands for conduct of Dutchbat in Srebrenica’, Journal of International Criminal Justice, 9(5), pp. 1143–1157. Available at: https://doi.org/10.1093/jicj/mqr048 (Accessed: 23 June 2026).

14. Palchetti, P. (2013) ‘The allocation of responsibility for internationally wrongful acts committed in the course of multinational operations’, International Review of the Red Cross, 95(891/892), pp. 727–742. Available at: https://international-review.icrc.org/sites/default/files/irrc-891-892-palchetti.pdf (Accessed: 23 June 2026).

15. Supreme Court of the Netherlands (2013) The State of the Netherlands v Hasan Nuhanović, Case no. 12/03324, Judgment of 6 September 2013 [online]. Available at: https://ihl-databases.icrc.org/en/national-practice/state-netherlands-v-hasan-nuhanovic-1203324-supreme-court-06-september-2013 (Accessed: 23 June 2026).

16. United Nations (1945) Charter of the United Nations [online]. Available at: https://www.un.org/en/about-us/un-charter/full-text (Accessed: 23 June 2026).