Coup d'État: Is a Military Coup Illegal Under International Law?
Introduction
A coup d'état is an extra-constitutional seizure of governmental power, often carried out by military or security actors. Its illegality under international law, however, cannot be answered by reference to a single universal anti-coup rule. International law does not treat every military takeover as the same legal wrong merely because constitutional procedures have been displaced.
The legal consequences depend on the obligations applicable to the state and on the conduct surrounding the transfer of power. Regional rules on unconstitutional changes of government may apply directly; international human rights law may protect political participation displaced by the takeover; and foreign involvement may engage the law of non-intervention or the prohibition on force. Political condemnation, domestic constitutional illegality, and breach of an international obligation remain distinct questions (d’Aspremont, 2010).
International law did not historically prescribe a general form of government for states. The development of international human rights law has nonetheless placed aspects of political participation within the international legal order. For states parties to the International Covenant on Civil and Political Rights, Article 25 protects citizens’ rights to participate in public affairs and to vote and stand for election in genuine periodic elections. The Human Rights Committee has interpreted those guarantees as central to democratic government grounded in popular consent (Human Rights Committee, 1996).
A military takeover that prevents citizens from exercising protected political rights may consequently engage a state’s obligations under the Covenant. That treaty-based protection should not be converted into an uncontested universal rule requiring every government to satisfy a single model of democratic legitimacy.
Some regional systems regulate unconstitutional transfers of power much more explicitly. Article 30 of the Constitutive Act of the African Union bars governments that come to power through unconstitutional means from participating in Union activities (African Union, 2000). For states parties to the African Charter on Democracy, Elections and Governance, a coup against a democratically elected government is expressly classified as an unconstitutional change of government subject to African Union sanctions (African Union, 2007).
The Inter-American system also provides institutional responses to unconstitutional changes in government. Article 9 of the Charter of the Organization of American States permits suspension where a democratically constituted government has been overthrown by force, subject to specified procedures, while the Inter-American Democratic Charter establishes additional collective mechanisms for unconstitutional interruptions or serious alterations of democratic order (OAS, 1948, as amended; OAS, 2001). These regional regimes create concrete international consequences without establishing that identical rules govern every state under general international law.
The means used to produce or sustain a coup can generate separate international violations. In Military and Paramilitary Activities in and against Nicaragua, the International Court of Justice distinguished prohibited intervention from the unlawful use of force when assessing external support for armed groups seeking to overthrow a government (ICJ, 1986). Coup-related violence may also engage applicable human rights obligations, while international humanitarian law applies only if the factual circumstances meet the legal threshold for an armed conflict.
Coup d'état is not itself among the crimes within the International Criminal Court’s subject-matter jurisdiction, which covers genocide, crimes against humanity, war crimes, and aggression under the Rome Statute (ICC, 1998). Conduct associated with a takeover must satisfy the independent elements of one of those crimes before international criminal responsibility arises.
A successful coup may also create disputes over governmental representation without ordinarily altering the international identity of the state. Recognition or practical dealings with new authorities do not by themselves determine whether the seizure of power complied with domestic constitutional law or applicable international obligations. International legal personality ordinarily continues despite a change of government, so existing international obligations are not extinguished simply because political authority has changed hands (ILC, 1963).
1. What Counts as a Coup d'État?
A coup d'état is generally identified by the actors involved, the target of the seizure, and the means used to obtain power. Powell and Thyne define a coup attempt as an illegal and overt attempt by the military or other elites within the state apparatus to remove the sitting executive. Their formulation captures the classic coup: a relatively small group already located within state institutions attempts to displace the executive outside the established constitutional process (Powell and Thyne, 2011).
Military participation is common but not essential to that definition. Civilian elites within the state apparatus may also be coup perpetrators. The decisive feature is not the ideology of those taking power, nor whether the displaced government is democratic or authoritarian, but the extra-constitutional seizure of executive authority by insiders to the state apparatus (Powell and Thyne, 2011; Marsteintredet and Malamud, 2020).
The language of illegality in political-science definitions requires care when the question is international law. It generally describes the unconstitutional or unlawful character of the attempted transfer under the domestic order being displaced. That characterization does not establish, by itself, that the same conduct violates an international obligation.
1.1 Coup, revolution, rebellion, and self-coup
A classic coup differs from a revolution principally in the identity of those who remove the existing authorities. Marsteintredet and Malamud distinguish illegal removal of the chief executive by actors belonging to the state from revolutionary removal by actors outside it (Marsteintredet and Malamud, 2020). Other datasets use somewhat different definitions, which confirms that “coup” is not governed by a single universal taxonomy.
Rebellion and civil war are distinct as well. An organized armed movement may seek to overthrow the government and ultimately capture the state, but victory by insurgent forces is not ordinarily classified as a classic coup merely because executive power changes hands. If the confrontation reaches the legal threshold of armed conflict, its classification under international humanitarian law depends on the parties and the character of the hostilities rather than on whether political commentary calls the events a coup or rebellion.
Foreign-imposed regime change presents another category. Where the decisive coercive actor is another state using armed force to remove a government, the international legal analysis centers on inter-state force, sovereignty, intervention, and any applicable law of armed conflict. External encouragement or assistance does not necessarily alter the classification of a domestically organized coup; the distinction concerns who is actually responsible for the seizure of power.
A self-coup, often described as an autogolpe, reverses the classic pattern. The incumbent executive remains in office but acts outside constitutional limits to neutralize institutions capable of constraining executive authority, commonly the legislature, courts, or electoral bodies. It is analytically distinct from the removal of an incumbent by other state actors, although some regional rules on unconstitutional changes of government may reach forms of incumbent manipulation without labeling every such episode a coup (Marsteintredet and Malamud, 2020).
2. Is a Coup d'État Illegal Under International Law?
There is no treaty of universal application that makes every coup d'état unlawful simply because governmental power has been seized outside constitutional procedures. Nor does general international law supply an uncontested rule under which every extra-constitutional military takeover is prohibited as such. The legal answer depends on the international obligation invoked and on the circumstances surrounding the change of government.
The distinction is especially important because international reactions to coups are often expressed in the language of illegality. Diplomatic condemnation, demands for constitutional restoration, sanctions, and suspension from an international organization may all have legal significance, but none alone establishes the existence of a universal customary prohibition. D'Aspremont, for example, cautions against inferring general international unlawfulness simply from condemnatory practice or special sanction regimes, while separately advancing a broader argument concerning democratic obligations in international law (d'Aspremont, 2010).
A customary rule requires a general practice accepted as law. The International Law Commission's conclusions on the identification of customary international law require the elements of general practice and opinio juris to be established separately (ILC, 2018). Official statements, diplomatic conduct, institutional voting, and reactions to unconstitutional transfers may contribute to that inquiry, but their legal significance depends on context and on whether states act from a sense of legal obligation rather than political preference alone.
Regional law can produce a more definite answer. The African Union, ECOWAS, and the Organization of American States have adopted rules and procedures specifically directed at unconstitutional changes of government. Human rights treaties may also be engaged when a takeover suppresses political participation or other protected rights, while foreign involvement can raise distinct questions under the rules on intervention and force.
The absence of one worldwide anti-coup rule consequently does not place military takeovers outside international law. It means that international unlawfulness must be tied to an identifiable obligation rather than inferred from the label “coup” itself.
2.1 Domestic illegality and international unlawfulness
A coup ordinarily seeks to bypass or displace the constitutional procedures governing executive authority. Whether the conduct also constitutes treason, sedition, rebellion, or another criminal offense is a question for the domestic law of the state concerned. Those classifications vary between legal systems and cannot be treated as international offenses merely because similar terminology is used across jurisdictions.
International responsibility follows a different legal structure. Article 2 of the International Law Commission's Articles on Responsibility of States for Internationally Wrongful Acts requires conduct attributable to a state and a breach of an international obligation binding on that state (ILC, 2001). Domestic unconstitutionality, standing alone, establishes neither element.
An international breach may instead arise under a regional democracy instrument, a human rights treaty, the customary principle of non-intervention, or another applicable rule. Several different international obligations may be implicated during the same coup without converting the coup itself into a single, universally defined international wrong.
3. Democracy and Political Participation
International law does regulate aspects of how public authority is exercised, most clearly through rights of political participation. Article 25 of the International Covenant on Civil and Political Rights guarantees citizens of States Parties the right and opportunity to take part in public affairs and to vote and be elected at genuine periodic elections based on universal and equal suffrage (ICCPR, 1966, Article 25).
The Human Rights Committee has interpreted Article 25 as protecting participation both directly and through freely chosen representatives. General Comment No. 25 also connects effective political participation with freedom of expression, assembly, and association, while emphasizing the role of genuine periodic elections in ensuring that governmental authority reflects the free expression of the electorate's will (Human Rights Committee, 1996).
A military takeover may engage these obligations when it dissolves representative institutions, prevents elections, excludes citizens from public affairs, or otherwise interferes with rights protected by the Covenant. The conclusion must still be based on the measures actually taken and on the treaty obligations applicable to the state. Article 25 does not operate as a freestanding criminal prohibition of coups.
Political-participation rights also do not resolve the broader debate over democratic government in general international law. Binding treaty rules protecting elections and participation are firmer legal ground than the proposition that customary international law requires every state to conform to one comprehensive democratic model.
3.1 The democratic-entitlement debate
Thomas Franck's influential account of an “emerging right to democratic governance” argued that international law was moving away from indifference to the democratic origins of governmental authority. His analysis linked developments in political participation, election monitoring, and international practice to a broader claim that democratic legitimacy was acquiring international legal significance (Franck, 1992).
That thesis has remained contested. Treaty guarantees of political participation and strong regional democracy regimes do not automatically establish a rule of universal customary international law, because their legal force may depend on treaty participation or membership in a particular organization. Roth likewise argued that democratic legitimacy had not become a customary requirement for recognizing a government de jure (Roth, 2015).
More recent scholarship continues to identify uncertainty in the legal criteria governing governmental status. Pavlopoulos notes the inconsistency of state practice and argues that effective control no longer carries the same significance it once did, while constitutional legitimacy has acquired greater relevance in some circumstances (Pavlopoulos, 2025). These developments support careful treatment of democratic legitimacy without turning an evolving and disputed doctrine into settled law.
4. Regional Law on Unconstitutional Changes
Some regional systems regulate coups far more explicitly than general international law. The African system is particularly developed, combining constituent rules, treaty obligations, institutional sanctions, and preventive requirements directed at unconstitutional changes of government. ECOWAS adds a subregional layer in West Africa, while the Inter-American system provides its own mechanisms for protecting democratic constitutional order.
These regimes differ in legal source and scope. Constituent treaties, supplementary protocols, democracy charters, and institutional decisions do not possess identical legal character. Their application also depends on membership, treaty participation, procedural conditions, and the particular form of unconstitutional change involved.
Regional rules can consequently make a coup subject to specific international consequences without establishing an identical rule for states outside that legal system. The distinction between regional obligation and general international law is central to any accurate assessment of a military takeover.
4.1 The African Union anti-coup regime
The Constitutive Act of the African Union places opposition to unconstitutional changes of government within the Union's foundational legal structure. Article 4(p) identifies the condemnation and rejection of unconstitutional changes of government as an AU principle, while Article 30 provides that governments coming to power through unconstitutional means shall not be allowed to participate in Union activities (African Union, 2000).
The African Charter on Democracy, Elections and Governance develops the concept further for its States Parties. Article 23 identifies several forms of unconstitutional change, including a coup against a democratically elected government, intervention by mercenaries, replacement of an elected government by armed dissidents or rebels, and refusal by an incumbent to relinquish power after elections meeting the conditions specified in the Charter (African Union, 2007).
The same provision also reaches certain constitutional amendments or revisions that infringe the principles of democratic change of government. The African framework is thus wider than the classic military putsch. It addresses some methods of retaining power unlawfully as well as violent accession to office.
Article 25 establishes consequences after the Peace and Security Council determines that an unconstitutional change has occurred and diplomatic initiatives have failed. The State Party may be suspended from participation in AU activities, but suspension does not extinguish its obligations to the Union. The Charter specifically preserves those obligations, including relevant human rights commitments, while efforts to restore constitutional order continue (African Union, 2007, Article 25).
Prevention is part of the same framework. Article 14 requires States Parties to strengthen constitutional civilian control over armed and security forces and to adopt measures concerning attempts to remove elected governments through unconstitutional means. The AU regime accordingly addresses both the seizure of authority and the institutional conditions intended to prevent it.
4.2 ECOWAS and constitutional government
The 2001 ECOWAS Supplementary Protocol on Democracy and Good Governance establishes a more specific West African regime. Article 1 requires accession to power through free, fair, and transparent elections and adopts zero tolerance for power obtained or maintained by unconstitutional means. It also requires the armed forces to remain apolitical and under legally constituted political authority (ECOWAS, 2001).
Articles 19 and 20 reinforce military subordination by requiring armed forces and police to remain non-partisan and by placing security institutions under legally constituted civilian authorities. Article 45 then authorizes sanctions where democracy is abruptly terminated or where massive human rights violations occur. The measures listed in that provision include restrictions on participation in ECOWAS decision-making and other forms of institutional exclusion.
Suspension and sanctions are accompanied by continued engagement. Article 45 provides for ECOWAS to monitor and support efforts toward a return to constitutional order. Sanctions, diplomatic pressure, mediation, and restoration of constitutional government consequently form related but legally distinct elements of the ECOWAS response.
4.3 The Inter-American democratic system
The Charter of the Organization of American States contains a treaty-based mechanism for responding to the forcible overthrow of democratic government. Article 9 permits suspension of a member whose democratically constituted government has been overthrown by force, provided diplomatic initiatives have proved unsuccessful, and the required two-thirds vote is obtained at a special session of the General Assembly (OAS Charter, Article 9).
Suspension concerns participation in the Organization. It does not extinguish the state's international personality or release it from its obligations under the OAS Charter. Article 9 expressly provides for continuing diplomatic initiatives aimed at re-establishing representative democracy.
The Inter-American Democratic Charter, adopted by the OAS General Assembly in 2001, addresses a broader range of threats to democratic constitutional order. Article 19 refers both to an unconstitutional interruption of democratic order and to an unconstitutional alteration of the constitutional regime that seriously impairs democratic order. Articles 20 and 21 provide mechanisms for collective assessment, diplomatic initiatives, and, in the circumstances specified by the instrument, suspension (OAS, 2001).
The legal sources should not be conflated. The OAS Charter is the Organization's constituent treaty, as amended by subsequent protocols. The Inter-American Democratic Charter is a General Assembly instrument operating within that treaty framework and has a different legal character, even though it has considerable institutional significance.
4.4 The Malabo Protocol and regional criminalization
The African Union took a further step in 2014 with the Protocol on Amendments to the Protocol on the Statute of the African Court of Justice and Human Rights, commonly called the Malabo Protocol. Article 28E of the amended Statute defines a crime of unconstitutional change of government and includes, among other conduct, a coup against a democratically elected government (African Union, 2014).
The provision extends beyond a conventional military takeover. It also addresses specified forms of intervention by mercenaries, replacement by armed dissidents or rebels, refusal to relinquish power following qualifying elections, and certain unconstitutional methods of manipulating constitutional or electoral rules for the purpose of accessing or maintaining power.
That provision is not presently an operative basis of international criminal jurisdiction. As of September 2026, the Malabo Protocol had not entered into force under the African Union treaty-status record (African Union, 2026). Article 28E consequently demonstrates an adopted regional effort to criminalize unconstitutional changes of government; it does not establish coup d'état as a general international crime.
5. Other International Rules a Coup May Violate
The legal consequences of a coup are not confined to rules governing unconstitutional changes of government. Its preparation, execution, and consolidation may involve conduct independently regulated by international law, even where the coup itself cannot be characterized as a universally prohibited act.
This distinction is especially important for foreign involvement and violence. Intervention by another state, arbitrary detention by state authorities, or hostilities reaching the threshold of armed conflict each raise separate legal questions with their own elements and sources.
Responsibility must also be kept analytically separate. A foreign state's internationally wrongful conduct, violations attributable to the authorities of the affected state, and the criminal responsibility of individuals arise under different legal regimes. Their occurrence during the same political crisis does not transform them into a single international offense called a coup.
5.1 Foreign support and the non-intervention rule
The customary principle of non-intervention protects matters that international law leaves for states to decide freely, including the choice of their political system. In Military and Paramilitary Activities in and against Nicaragua, the International Court of Justice treated coercion as the defining element of prohibited intervention in matters within a state's freedom of choice (ICJ, 1986, para. 205).
The Court found that United States support for the contras, including financial support, training, weapons, intelligence, and logistical assistance, breached the customary principle of non-intervention (ICJ, 1986, para. 242). That conclusion is directly relevant to foreign assistance intended to support the overthrow of another state's government.
Intervention and the use of force are not coextensive. The Court held that arming and training the contras could involve the threat or use of force, whereas supplying funds, although part of the unlawful intervention before the Court, did not itself amount to a use of force (ICJ, 1986, para. 228). Foreign support for a coup must accordingly be classified according to what the external state actually does.
Political approval, criticism, or diplomatic preference does not automatically amount to prohibited intervention. The legal question is whether the foreign conduct is coercive in relation to a matter that the target state is entitled to decide freely. Non-military interference may still be unlawful when that requirement is met.
5.2 Human rights during and after a coup
A coup does not by itself suspend a state's human rights treaty obligations. For a State Party to the ICCPR, rights concerning life, freedom from torture, liberty and security, expression, peaceful assembly, association, and political participation continue to be governed by the Covenant. Arrests, restrictions, and uses of force during or after a takeover must be assessed under the provisions applicable to the particular conduct.
Article 4 permits derogation from certain Covenant obligations only during a public emergency threatening the life of the nation that has been officially proclaimed, and only subject to the conditions imposed by that provision. Some obligations are non-derogable. Military rule, constitutional breakdown, or the political characterization of events as a coup does not by itself create a general power to suspend the Covenant (ICCPR, 1966, Article 4).
Political rights require the same individualized analysis. Article 25 protects participation in public affairs and genuine periodic elections, while expression, assembly, and association support effective political participation (Human Rights Committee, 1996). A post-coup government may violate these guarantees through particular measures, but the violation must be established by applying the relevant legal rule rather than inferred solely from the existence of military government.
5.3 Coups, armed conflict, and international crimes
A military coup does not automatically create an armed conflict. Where government forces confront a non-state armed group, a non-international armed conflict requires sufficient intensity of hostilities and sufficient organization of the non-state party. These criteria depend on the facts and are not satisfied merely because weapons are used during an attempted seizure of government (ICTY, Prosecutor v. Tadić, 1995, para. 70; ICRC, 2020).
Riots, internal disturbances, and isolated or sporadic acts of violence may remain below the threshold for a non-international armed conflict. A short confrontation surrounding a presidential palace or military installation cannot be classified as a NIAC solely because it forms part of a coup attempt. The duration, intensity, organization, command structure, and broader pattern of hostilities may all be relevant to classification.
A different rule applies when armed force occurs between states. Common Article 2 of the 1949 Geneva Conventions applies to declared war and other armed conflicts arising between two or more High Contracting Parties. International armed conflict does not depend on the intensity threshold used to distinguish a NIAC from lower-level internal violence.
International criminal law presents another distinct question. Article 5 of the Rome Statute confines the International Criminal Court's subject-matter jurisdiction to genocide, crimes against humanity, war crimes, and the crime of aggression. Coup d'état is not a separate crime within the Court's jurisdiction (Rome Statute, 1998, Article 5).
Conduct committed during a coup can nevertheless fall within one of those crimes if the applicable legal elements and jurisdictional requirements are satisfied. A killing committed during an attempted takeover is not a crime against humanity or a war crime merely because it occurs in that political context. The contextual, material, and mental elements required by the relevant provisions of the Rome Statute must be established independently (Rome Statute, 1998, Articles 6–8 bis).
6. Attribution and State Responsibility After a Coup
International responsibility requires a distinction between breach and attribution. Article 2 of the International Law Commission’s Articles on Responsibility of States for Internationally Wrongful Acts provides that an internationally wrongful act of a state exists only where conduct is attributable to that state and constitutes a breach of an international obligation binding upon it (ILC, 2001, Article 2).
A coup complicates attribution because participants may occupy different legal positions. Serving military officers, civilian officials, political organizations, private individuals, and organized armed movements cannot all be treated under the same rule. The unconstitutional objective of their conduct does not, by itself, determine whether international law attributes that conduct to the state.
The applicable attribution rule depends on the status of the actor and the capacity in which the conduct occurred. Acts of existing state organs may fall within the ordinary rules of attribution, while conduct of an independent movement may require a different legal basis. Success in taking power can also affect the treatment of conduct committed before the new authorities became the government.
6.1 Conduct by military and other state organs
Article 4 of the ILC Articles attributes to the state the conduct of any state organ, whatever functions that organ exercises and whatever its position within the state structure (ILC, 2001, Article 4). Members of the armed forces, police, or other public institutions may accordingly engage state responsibility when they act as state organs.
Domestic illegality does not necessarily prevent attribution. Article 7 provides that conduct remains attributable where an organ or an entity empowered to exercise governmental authority acts in that capacity but exceeds its authority or contravenes instructions (ILC, 2001, Article 7). An officer’s violation of constitutional or statutory limits does not, without more, transform official conduct into private conduct.
The qualification is important in a coup. Article 7 does not mean that every act committed by a soldier or public official is attributable to the state. The question is whether the person acted in an official or apparently governmental capacity, rather than purely as a private individual. That inquiry is fact-sensitive where officers use military units, state facilities, command structures, or official authority while attempting to overthrow the government.
Attribution of particular acts must also be separated from attribution of the coup as a whole. Violence committed through official military authority may be attributable even where the legal characterization of the wider seizure of power remains disputed.
6.2 Successful movements and later attribution
Article 10 addresses a different situation. Under Article 10(1), the conduct of an insurrectional movement that becomes the new government of a state is considered an act of that state under international law (ILC, 2001, Article 10).
The rule rests on continuity between the movement and the government it succeeds in establishing. The ILC commentary requires a real and substantial continuity between the movement as such and the governmental organization that emerges from it. Article 10 does not attribute every act of every individual associated with a successful uprising; it concerns conduct properly attributable to the movement itself (ILC, 2001).
Nor does every military coup automatically fall within Article 10. A rapid seizure of power by serving officers may raise attribution questions under Articles 4 and 7, while an independent insurrectional movement may present a different legal situation. The character and organization of the actors must be established before Article 10 can be applied.
7. How the International Community Responds to a Coup
No single legal response follows automatically whenever a coup occurs. Regional organizations may invoke rules dealing expressly with unconstitutional changes of government, individual states may alter diplomatic or economic relations, and United Nations organs may act within their respective mandates.
The legal basis of each measure determines its effect. AU suspension under the African Charter on Democracy, Elections and Governance, ECOWAS sanctions under its 2001 Supplementary Protocol, and suspension under Article 9 of the OAS Charter arise from different instruments and procedures. Diplomatic condemnation or mediation may accompany those measures without possessing the same legal force.
The expression “international response” can consequently obscure important distinctions. Similar political demands for restoration of constitutional government may rest on treaty obligations, institutional powers, or discretionary foreign policy.
7.1 Suspension, sanctions, and constitutional restoration
The regional systems discussed above provide different mechanisms for responding to unconstitutional political change. Under the African Charter on Democracy, Elections and Governance, a State Party may be suspended from participation in African Union activities after the procedures in Article 25 are satisfied. ECOWAS Article 45 permits specified sanctions where democracy is abruptly terminated, while Article 9 of the OAS Charter permits suspension of a member from participation in OAS bodies under its own procedural conditions (African Union, 2007; ECOWAS, 2001; OAS Charter, Article 9).
Suspension does not normally terminate the international personality of the state. The African Charter expressly provides that a suspended State Party remains bound by its obligations to the African Union, particularly those concerning human rights. Article 9 of the OAS Charter likewise preserves the suspended member’s obligations to the Organization.
Sanctions and suspension should not be treated as synonymous. The ECOWAS Protocol, for example, identifies measures including restrictions on institutional participation and support for candidates for international positions. Such measures derive from the applicable regional instrument rather than from a universal rule imposing the same sanctions after every coup.
Diplomatic efforts can continue alongside institutional penalties. Both African and Inter-American mechanisms contemplate efforts to restore constitutional or representative government even after suspension. Exclusion from institutional participation is thus one possible legal consequence within a broader process of political and diplomatic engagement.
7.2 The United Nations and coups
The United Nations Charter does not create an automatic sanctions mechanism for coups. Security Council enforcement action depends on the Charter’s peace-and-security framework. Under Article 39, the Council must determine the existence of a threat to the peace, breach of the peace, or act of aggression before deciding upon measures under Articles 41 or 42 (United Nations, 1945).
The aftermath of Haiti’s 1991 coup illustrates the case-specific nature of this authority. In Resolution 841 of 16 June 1993, the Security Council acted under Chapter VII and imposed mandatory economic measures after determining that continuation of the Haitian situation threatened international peace and security in the region. The resolution described the circumstances as unique and exceptional rather than establishing an automatic rule for all unconstitutional transfers of power (UN Security Council, 1993).
Other United Nations organs operate differently. General Assembly resolutions, Secretary-General diplomacy, human rights mechanisms, and decisions concerning representation derive from distinct mandates. Their legal effects cannot be equated with binding Security Council measures adopted under Chapter VII.
8. Recognition of Coup Governments
Once new authorities exercise control over state institutions, the question of governmental status becomes separate from the legality of the takeover. Recognition of a government concerns which authority other states treat as entitled to act internationally for an existing state. It is conceptually distinct from recognition of the state itself.
Modern practice does not reduce governmental status to a single mechanical test. Effective control has historically been important, while constitutional legitimacy has acquired greater significance in some situations involving rival claimants. Contemporary scholarship nevertheless disagrees over the precise weight that international law assigns to these considerations (Pavlopoulos, 2025; Hasar, 2025).
States may also deal with de facto authorities without conclusively resolving every question of formal recognition. Diplomatic relations, representation, domestic litigation, state assets, and practical cooperation can generate different legal consequences depending on the position taken by the states and institutions concerned (Hasar, 2025).
8.1 Effectiveness and democratic legitimacy
Effective control has long been relevant because a government must ordinarily be capable of exercising authority and performing governmental functions. Control over institutions, territory, and administration can provide important evidence that an authority operates as the government in fact.
Recent practice has complicated the traditional emphasis on effectiveness. Pavlopoulos argues that effective control does not always determine governmental status where a rival claimant possesses a stronger constitutional title. His analysis gives greater significance to constitutional legitimacy without treating democratic representativity itself as an invariably decisive criterion of positive international law (Pavlopoulos, 2025).
Constitutional legitimacy and democratic legitimacy should not be collapsed into one concept. An authority may possess a constitutional claim that derives partly from an electoral process, but international practice does not establish a universal rule under which democratic credentials automatically override effective control in every governmental dispute.
Recognition decisions must consequently be assessed in context. Effective control, constitutional continuity, and the reactions of other states may all be relevant, but none functions as an automatic universal test applicable regardless of the factual and legal circumstances.
8.2 UN credentials and rival governments
The United Nations does not possess a general power to recognize governments. Recognition remains a matter for states, while the Organization determines whether particular representatives are entitled to participate on behalf of a member state.
Within the General Assembly, Rules 27–29 govern credentials. Credentials are submitted to the Secretary-General, examined by a nine-member Credentials Committee, and reported upon to the Assembly. Where admission of a representative is challenged, provisional participation may continue pending the Assembly’s decision (United Nations General Assembly, Rules 27–29).
A credentials dispute can become politically and legally significant when rival authorities claim to represent the same state. The decision affects participation within the United Nations, but it is not equivalent to a general power of the Organization to confer or withhold recognition of a government.
8.3 Does recognition make the coup lawful?
Recognition does not retrospectively determine whether the original seizure of power complied with domestic constitutional law or applicable international obligations. If conduct during a coup breached an international rule, subsequent acceptance of the new authorities does not by itself erase the legal character of that earlier conduct.
Recognition can nonetheless affect later legal relations. It may influence diplomatic dealings, litigation involving the state, control of state assets, immunities, representation, and other questions concerning which authority may act internationally for the state (Hasar, 2025).
Non-recognition also has limits. Authorities exercising factual control may continue to administer territory and engage in practical relations even when their governmental status is disputed. The legality of the coup, governmental status, and the consequences of recognition remain related but analytically separate questions.
9. A Coup Changes the Government, Not the State
A successful coup ordinarily changes the government rather than creating a new state. The international legal personality of the state continues despite changes in the individuals or institutions exercising governmental authority. This principle of continuity preserves the distinction between the state and its government.
The ILC commentary to Article 10 addresses the point directly in relation to a successful insurrectional movement. Where such a movement replaces the former government, the state remains the same subject of international law notwithstanding the change in governmental organization (ILC, 2001).
Treaty relations are likewise not ordinarily terminated simply because a government is replaced through unconstitutional means. Fitzmaurice’s Fourth Report on the Law of Treaties treated even abnormal or unconstitutional governmental change as leaving the continuity of the state, and consequently its treaty obligations, unaffected (Fitzmaurice, 1959).
This continuity explains why an international organization may restrict a post-coup government’s participation while continuing to regard the underlying state as bound by its international obligations. A constitutional rupture can alter representation and generate responsibility without creating a new international legal person.
Also read
Conclusion
A military coup is ordinarily an extra-constitutional seizure of governmental authority, but international law does not impose one universal rule making every coup unlawful merely because power was acquired outside domestic constitutional procedures. The legal consequences depend on the particular obligations engaged by the takeover and by the conduct surrounding it.
Regional systems can provide much more specific rules. African Union, ECOWAS, and Inter-American instruments impose distinct consequences for unconstitutional changes of government, while human rights law, the law of non-intervention, the prohibition on force, and international criminal law regulate conduct that may occur during or after a coup.
International responsibility requires the additional question of attribution. Recognition raises another issue again: which authority may act for a state whose international legal identity ordinarily continues despite the unconstitutional replacement of its government.
Domestic constitutional illegality, breach of an international obligation, state responsibility, individual criminal responsibility, institutional sanctions, and governmental recognition are thus separate legal categories. Distinguishing them explains why coups may produce serious international legal consequences without supporting the broader proposition that every military coup constitutes the same universal international wrong.
References
African Union (2000) Constitutive Act of the African Union, adopted 11 July 2000, entered into force 26 May 2001, 2158 UNTS 3. Available at: https://au.int/en/treaties/constitutive-act-african-union (Accessed: 10 September 2026).
African Union (2007) African Charter on Democracy, Elections and Governance, adopted 30 January 2007, entered into force 15 February 2012. Available at: https://au.int/en/treaties/african-charter-democracy-elections-and-governance (Accessed: 10 September 2026).
African Union (2014) Protocol on Amendments to the Protocol on the Statute of the African Court of Justice and Human Rights, adopted 27 June 2014. Available at: https://au.int/en/treaties/protocol-amendments-protocol-statute-african-court-justice-and-human-rights (Accessed: 10 September 2026).
African Union (2026) Protocol on Amendments to the Protocol on the Statute of the African Court of Justice and Human Rights: Treaty Status [online]. Available at: https://au.int/en/treaties/protocol-amendments-protocol-statute-african-court-justice-and-human-rights (Accessed: 10 September 2026).
d’Aspremont, J. (2010) ‘Responsibility for Coups d’État in International Law’, Tulane Journal of International & Comparative Law, 18(2), pp. 451–475. Available at: https://papers.ssrn.com/sol3/papers.cfm?abstract_id=1619282 (Accessed: 10 September 2026).
Economic Community of West African States (2001) Protocol A/SP1/12/01 on Democracy and Good Governance Supplementary to the Protocol Relating to the Mechanism for Conflict Prevention, Management, Resolution, Peacekeeping and Security, adopted 21 December 2001. Available at: https://www.ecowas.int/publication/supplementary-protocols/ (Accessed: 10 September 2026).
Fitzmaurice, G.G. (1959) ‘Fourth Report on the Law of Treaties’, Yearbook of the International Law Commission, 1959, vol. II, pp. 37–81, UN Doc. A/CN.4/120. Available at: https://legal.un.org/ilc/documentation/english/a_cn4_120.pdf (Accessed: 10 September 2026).
Franck, T.M. (1992) ‘The Emerging Right to Democratic Governance’, American Journal of International Law, 86(1), pp. 46–91. DOI: https://doi.org/10.2307/2203138.
Geneva Conventions of 12 August 1949 (1949), adopted 12 August 1949, entered into force 21 October 1950, 75 UNTS 31, 85, 135 and 287.
Hasar, S. (2025) ‘Recognition of Governments and the Prohibition of Intervention’, AJIL Unbound, 119, pp. 275–279. DOI: https://doi.org/10.1017/aju.2025.10037.
Human Rights Committee (1996) General Comment No. 25: The Right to Participate in Public Affairs, Voting Rights and the Right of Equal Access to Public Service (Article 25), UN Doc. CCPR/C/21/Rev.1/Add.7, 27 August 1996. Available at: https://tbinternet.ohchr.org/_layouts/treatybodyexternal/Download.aspx?Lang=en&symbolno=CCPR%2FC%2F21%2FRev.1%2FAdd.7 (Accessed: 13 September 2026).
International Committee of the Red Cross (2020) Commentary on the Third Geneva Convention: Article 3 — Conflicts Not of an International Character [online]. Available at: https://ihl-databases.icrc.org/en/ihl-treaties/gciii-1949/article-3/commentary/2020 (Accessed: 14 September 2026).
International Court of Justice (1986) Military and Paramilitary Activities in and against Nicaragua (Nicaragua v. United States of America), Merits, Judgment, 27 June 1986, I.C.J. Reports 1986, p. 14.
International Criminal Tribunal for the former Yugoslavia (1995) Prosecutor v. Duško Tadić, Decision on the Defence Motion for Interlocutory Appeal on Jurisdiction, 2 October 1995, Case No. IT-94-1-AR72.
International Covenant on Civil and Political Rights (1966) adopted 16 December 1966, entered into force 23 March 1976, 999 UNTS 171. Available at: https://treaties.un.org/Pages/ViewDetails.aspx?chapter=4&mtdsg_no=IV-4&src=TREATY (Accessed: 15 September 2026).
International Law Commission (2001) ‘Draft Articles on Responsibility of States for Internationally Wrongful Acts, with Commentaries’, Yearbook of the International Law Commission, 2001, vol. II, Part Two, UN Doc. A/56/10. Available at: https://legal.un.org/ilc/reports/2001/english/content.pdf (Accessed: 30 September 2026).
International Law Commission (2018) ‘Draft Conclusions on Identification of Customary International Law, with Commentaries’, Report of the International Law Commission on the Work of Its Seventieth Session, UN Doc. A/73/10, Chapter V. Available at: https://legal.un.org/ilc/documentation/english/reports/a_73_10.pdf (Accessed: 15 September 2026).
Marsteintredet, L. and Malamud, A. (2020) ‘Coup with Adjectives: Conceptual Stretching or Innovation in Comparative Research?’, Political Studies, 68(4), pp. 1014–1035. DOI: https://doi.org/10.1177/0032321719888857.
Organization of American States (1948) Charter of the Organization of American States, adopted 30 April 1948, entered into force 13 December 1951, 119 UNTS 3, as amended. Available at: https://www.oas.org/en/sla/iajc/docs/treaties_A-41_Charter_of_the_Organization_of_American_States.pdf (Accessed: 20 September 2026).
Organization of American States (2001) Inter-American Democratic Charter, AG/RES. 1 (XXVIII-E/01), adopted 11 September 2001. Available at: https://www.oas.org/sap/peacefund/VirtualLibrary/InterAmericanDemocraticCharter/InterAmericanDemocraticCharter.pdf (Accessed: 20 September 2026).
Pavlopoulos, N. (2025) ‘Identifying Governments in International Law’, AJIL Unbound, 119, pp. 280–284. DOI: https://doi.org/10.1017/aju.2025.10038.
Powell, J.M. and Thyne, C.L. (2011) ‘Global Instances of Coups from 1950 to 2010: A New Dataset’, Journal of Peace Research, 48(2), pp. 249–259. DOI: https://doi.org/10.1177/0022343310397436.
Rome Statute of the International Criminal Court (1998) adopted 17 July 1998, entered into force 1 July 2002, 2187 UNTS 90.
Roth, B.R. (2014) ‘Whither Democratic Legitimism?: Contextualizing Recent Developments in the Recognition and Non-recognition of Governments’, AJIL Unbound, 108, pp. 213–218. DOI: https://doi.org/10.1017/S2398772300002191.
United Nations (1945) Charter of the United Nations, signed 26 June 1945, entered into force 24 October 1945, 1 UNTS XVI.
United Nations (n.d.) About UN Membership [online]. Available at: https://www.un.org/en/about-us/about-un-membership (Accessed: 20 September 2026).
United Nations General Assembly (n.d.) Rules of Procedure of the General Assembly, UN Doc. A/520/Rev.21 [online]. Available at: https://www.un.org/en/ga/about/ropga/index.shtml (Accessed: 30 September 2026).
United Nations Security Council (1993) Resolution 841 (1993), UN Doc. S/RES/841 (1993), 16 June 1993. Available at: https://digitallibrary.un.org/record/168120 (Accessed: 30 September 2026).