State Recognition and Succession

Recognition is the act by which an existing State or other international person acknowledges the status in international law of another entity — a new State, a new government, a belligerent administration, or a particular factual situation. State succession is the replacement of one State by another in the responsibility for the international relations of a territory. The two doctrines run together because every change in sovereignty raises both questions: what is the new entity, and what does it inherit. They draw on the full catalogue of sources of international law — treaty, custom, general principle and judicial decision. The leading authorities, the working tests, and the Indian and global practice on each are the practical core of this chapter, and recur across the wider international law for judiciary notes on this site.

Recognition is, formally, a unilateral discretionary act, but it is profoundly shaped by political reality. Few areas of international law sit so close to the politics of statehood. Succession sits one step further along the same continuum: once the political question of recognition has been resolved, the technical question of what passes from predecessor to successor — treaties, debts, archives, nationality, public property — must be worked through. Both fields are governed mainly by customary international law, with treaty law providing only a partial framework: the Vienna Convention on Succession of States in Respect of Treaties (1978) and the Vienna Convention on Succession of States in Respect of State Property, Archives and Debts (1983).

Recognition of States — what it does

Recognition is a statement by an international legal person as to the status of another real or alleged international legal person, or as to the validity of a particular factual situation. Once recognition is extended, the new situation becomes opposable to the recognising State; the legal consequences attendant on recognition begin to flow. These consequences operate on two planes: internationally, the recognising State accepts the new entity as a member of the community of States, with the rights and duties that flow from sovereign equality; domestically, the recognised entity acquires standing before the recognising State's municipal courts, with the privileges of diplomatic and consular immunities, the right to bring suit, and the various other entitlements reserved to recognised foreign States.

Recognition is to be distinguished from cognition — the mere awareness of the facts. Recognition implies both knowledge of the facts and an intention that the legal consequences attendant on recognition should operate. It is not enough for the recognising State to be aware that an entity meets the criteria of statehood; it must also will the legal effects of recognising it as such. This explains why recognition is often delayed long after the facts establishing a new State are clear, and why a State may continue diplomatic dealings with an unrecognised regime without thereby recognising it.

The two theories — constitutive and declaratory

The classical doctrinal divide is between the constitutive and declaratory theories of recognition.

Constitutive theory

The constitutive theory maintains that it is the act of recognition by other States that creates a new State and endows it with international legal personality. New States become full subjects of international law by virtue of the will and consent of existing States. The disadvantage of this approach is that an unrecognised "State" would not be subject to international obligations — it could be free, for example, from the prohibition on aggression. A further complication arises where a State is recognised by some States and not others: would the entity then enjoy partial personality?

Declaratory theory

The declaratory theory holds that recognition is merely the acceptance by States of an already existing factual situation. A new State acquires its capacity in international law not from the consent of others but from the satisfaction of the factual criteria of statehood — usually those drawn from the Montevideo Convention on the Rights and Duties of States (1933): a permanent population, a defined territory, a government, and the capacity to enter into relations with other States. The declaratory theory is more consistent with practice. Even States that for political reasons withhold recognition do not generally claim that the unrecognised entity is exempt from international law; they accept that it is bound, while denying it the legal advantages of formal recognition.

The middle position

The Charter of the Organization of American States adopted at Bogotá in 1948 declares that "the political existence of the State is independent of recognition by other States. Even before being recognised the State has the right to defend its integrity and independence." The Institut de Droit International had said as much in 1936. The Arbitration Commission established by the International Conference on Yugoslavia in 1991 confirmed in its Opinion No. 1 that "the existence or disappearance of the State is a question of fact" and that "the effects of recognition by other States are purely declaratory."

The declaratory theory is therefore the better view, but the constitutive element survives in two narrower senses. First, where the facts are unclear or contested, recognition by a State amounts to its considered evaluation of the situation, and that evaluation will bind the recognising State. The recognising State cannot later deny the factual position it has recognised, save where circumstances radically change. Second, in many domestic legal systems, an unrecognised State or government cannot claim the rights available to a recognised one before municipal courts — recognition itself produces a distinct legal effect inside the recognising State's legal order. To this extent, recognition is constitutive in domestic law even where it is declaratory internationally.

Recognition of governments — a separate question

The recognition of a new government is conceptually distinct from the recognition of a new State. A change in government does not affect the identity of the State as an international legal person; the State continues, complete with its rights and duties, regardless of which administration is in power. Recognition of a government becomes a question only where the change is unconstitutional — a coup, a revolution, a successful insurgency. The classical test is that articulated by the United Kingdom's Foreign Office: whether the new government enjoys, with a reasonable prospect of permanence, the obedience of the mass of the population and effective control of much of the greater part of the territory of the State concerned.

The Tinoco Arbitration (Great Britain v Costa Rica) (1923) 1 RIAA 369 is the classical illustration of effective control as the test. In 1919, the government of Tinoco in Costa Rica was overthrown and the new authorities repudiated certain obligations entered into by Tinoco with British nationals. The sole arbitrator, Chief Justice William Howard Taft, held that since the Tinoco administration had been in effective control of the country, it was the valid government — irrespective of the fact that a number of States, including the United Kingdom, had not recognised it. Where non-recognition is based on the illegitimacy or irregularity of origin rather than on lack of effective control, it loses much of its evidential weight. The case is the working amalgam of declaratory and constitutive elements: recognition becomes constitutive only where the factual conditions are in dispute.

The Tobar and Estrada doctrines

Two competing prescriptive doctrines have shaped the practice. The Tobar doctrine — sometimes called the doctrine of legitimacy — proposed that governments coming to power by extra-constitutional means should not be recognised until the change had been accepted by the people. The doctrine was applied principally by the United States in relation to Central America in the early twentieth century and was elaborated under President Wilson into a policy of democratic legitimacy. Logically, it amounts to a presumption against recognising any revolutionary government and is difficult to reconcile with political reality; in current practice it survives only as one factor a recognising State may consider.

The Estrada doctrine, propounded in 1930 by Genaro Estrada, the Mexican Secretary of Foreign Relations, advocated the opposite — automatic recognition of governments in all circumstances, on the ground that recognition implies a judgment on the legitimacy of the new regime which one State should not pass on another. The Estrada doctrine too is unrealistic, particularly where there are competing governments, and it minimises the distinction between recognition and the maintenance of diplomatic relations. The modern position, articulated by the United States in 1977 and the United Kingdom in 1980, is to abolish the formal recognition of governments altogether and to focus instead on whether to maintain diplomatic relations with the new regime. The substance of the inquiry — effective control, with a reasonable prospect of permanence — remains, but it is no longer dressed up in the language of formal recognition.

De facto and de jure recognition

Recognition itself may take two forms: de facto or de jure. De facto recognition implies that there is some doubt as to the long-term viability of the entity in question; it is a hesitant, wait-and-see acceptance of present realities. De jure recognition follows where the recognising State accepts that the effective control displayed is permanent and firmly rooted, with no legal reason — such as constitutional subservience to a foreign power — to qualify the assessment. The United Kingdom recognised the Soviet government de facto in 1921 and de jure in 1924; recognised the Italian conquest of Ethiopia de facto in 1936 and de jure two years later; and during the Spanish Civil War (1936–9), recognised the Republican government as the de jure government while extending de facto recognition to Franco's forces as they took over the country.

The legal consequences of de facto and de jure recognition are largely the same, but two distinctions matter. Only a government recognised de jure may bring a claim to property situated in the recognising State. And de facto recognition does not, of itself, include the exchange of diplomatic relations — that step is reserved for de jure recognition. De facto recognition, being provisional, may be withdrawn more readily; de jure recognition is intended to be more definitive and is correspondingly harder to revoke.

Implied, conditional and collective recognition

Recognition need not be express. It may be implied from conduct that is consistent only with the intention to recognise. The classical examples are a message of congratulations to a new State on attaining sovereignty; the formal establishment of diplomatic relations; the issuing of a consular exequatur to a representative of an unrecognised State; and a vote in favour of admission to the UN organisational system for the entity in question. By contrast, the maintenance of informal contacts, common participation in a multilateral conference, or joint signature of a multilateral treaty does not, by itself, imply recognition — Israel and many Arab States are members of the United Nations without that fact constituting recognition. States that wish to act with an unrecognised entity without being taken to recognise it routinely accompany their actions with an express disclaimer.

Conditional recognition refers to the practice of making recognition subject to the fulfilment of certain conditions — historically, the good treatment of religious minorities, or the grant of most-favoured-nation status. The Litvinov Agreement of 1933, by which the United States recognised the Soviet government on the latter's undertaking to refrain from acts prejudicial to American security, is the classical instance. Breach of such conditions does not invalidate the recognition; it may give rise to international responsibility, but the recognition itself stands.

Collective recognition — recognition by an international organisation rather than by individual States — has been frequently proposed since the founding of the League of Nations and re-emphasised with the establishment of the United Nations. It has not been adopted. Member States have insisted on retaining the right to extend recognition to entities through their own executive authorities. Membership of the United Nations is powerful evidence of statehood, since under Article 4 of the UN Charter only a State may be admitted, but UN membership does not bind individual member States to recognise the new admittee — they remain free to decline.

Withdrawal of recognition

Recognition once given may be withdrawn, though more readily for de facto than for de jure recognition. Where a de facto government loses the effective control on which its recognition was based, the reason for the recognition disappears and revocation follows naturally. De jure recognition is intended to be more definitive and is correspondingly harder to withdraw. Where a government recognised de jure has been overthrown, withdrawal of recognition of the previous administration is assumed once a successor regime is recognised. Withdrawal of recognition without recognising any successor is exceptional but possible: the United Kingdom and France adopted this course with regard to Cambodia in 1979, and the United Kingdom's recognition of the Italian conquest of Ethiopia was withdrawn in 1940 with the intensification of the war.

State succession — the field

State succession is the replacement of one State by another in the responsibility for the international relations of a territory. The relevant date is the date on which the successor State replaces the predecessor — usually the date of independence, though the Yugoslav Arbitration Commission noted that this is a question of fact in the light of all the circumstances. Succession arises in a defined set of situations: decolonisation; cession of territory from one State to another; secession of part of a State to form a new State; dissolution or dismemberment of a State into two or more new States; merger or unification of two or more States; and absorption of one State into another. Each situation produces its own pattern of consequences for treaties, public property, debts, archives, nationality and other matters.

The doctrinal universe is dominated by the contest between two extremes. The traditional positivist view, which gained ground in the era of decolonisation, was the "clean slate" principle — the new State acquires sovereignty free of the encumbrances created by the predecessor. The opposite view is one of universal succession, drawn from Roman private-law analogy, under which all rights and obligations transmit automatically. Neither extreme has prevailed. The modern position depends on the type of treaty, the type of succession, and the will of the States concerned.

Continuity vs succession

The first analytical question in any succession problem is whether what has occurred is succession at all or merely the continuity of an existing State in altered form. India is treated as the continuation of British India for international-law purposes; Pakistan is treated as a new State that emerged from the partition. Yugoslavia was the continuation of Serbia. Israel was a new State, distinct from British Mandate Palestine. Russia, by international consensus and on the basis of the 21 December 1991 decision of the Council of Heads of State of the Commonwealth of Independent States, was treated as the continuation of the USSR — including for permanent membership of the Security Council — within different borders. The Federal Republic of Yugoslavia (Serbia and Montenegro) claimed to be the continuation of the Socialist Federal Republic of Yugoslavia, but the Security Council in resolution 777 (1992) declared that the SFRY had ceased to exist and that the FRY could not automatically continue its UN membership; the FRY was finally admitted as a new member in 2000.

Succession to treaties

The rules on succession to treaties are governed by customary international law and, where applicable, by the Vienna Convention on Succession of States in Respect of Treaties (1978). Treaties are usually divided into three categories for succession purposes.

Territorial treaties

Territorial treaties — those that establish boundaries or other regimes attached to the territory itself — continue to bind the successor State. Article 11 of the Vienna Convention provides that a succession of States does not as such affect a boundary established by treaty or obligations and rights established by a treaty and relating to the regime of a boundary. The principle of stability of boundaries is reinforced by the Latin American doctrine of uti possidetis juris, by which the administrative divisions of the former Spanish empire became the borders of the newly independent States in South America in the early nineteenth century. The doctrine was extended to African decolonisation by resolution 16 of the Heads of State and Government of the Organisation of African Unity in 1964 and to post-Cold-War new States by international practice. The ICJ confirmed the rule in the Frontier Dispute (Burkina Faso/Republic of Mali) Case (1986) and observed in the Libya/Chad Case (1994) that "a boundary established by treaty thus achieves a permanence which the treaty itself does not necessarily enjoy."

Territorial treaties also cover "localised" or "dispositive" agreements — demilitarised zones, rights of transit, port facilities and other servitudes. Article 12 of the Vienna Convention provides that a succession of States does not affect obligations or rights relating to the use of any territory established by a treaty for the benefit of any foreign State and considered as attaching to the territory. The ICJ in the Gabčíkovo-Nagymaros Project Case (1997) treated this provision as reflecting customary law and applied it to a treaty between Hungary and Czechoslovakia governing navigation on an international waterway.

Political treaties

Political or "personal" treaties — those tied to the regime in power, such as treaties of alliance, friendship or neutrality — do not bind the successor State. They are seen as exceptionally closely connected to the personality of the State that has ceased to exist. The line between political and other treaties is not always sharp, and the residual category of treaties is dealt with by reference to the type of succession.

Other treaties — by type of succession

For other treaties, the Vienna Convention prescribes different rules for different types of succession. In a cession of territory from one State to another, Article 15 applies the "moving frontiers" rule: the treaties of the predecessor cease to apply to the ceded territory and the treaties of the successor extend to it. In a unification of two or more States to form a new State, Article 31 provides for continuance of treaties unless inconsistent with the object and purpose of the treaty or radically changing the conditions of its operation. In a separation or dissolution, Article 34 provides that treaties in force in the predecessor State continue in force for each successor in respect of the territory to which it succeeds.

The Convention adopts a different rule for "newly independent States" — successor States created out of decolonisation. Article 16 reflects the "clean slate" principle: such States are not bound to maintain in force any treaty by reason only of the fact that the treaty was in force regarding the territory at the date of succession. Bilateral treaties continue only by express or tacit agreement between the new State and the other party (Article 24). The clean-slate approach has been mitigated in practice by devolution agreements, by which the colonial power and the successor agreed that certain treaties would continue to apply, and by unilateral declarations under which the new State accepted the continuance of treaties for an interim period subject to review. The United Kingdom, France and the Netherlands all used devolution agreements at decolonisation.

Succession to property, archives and debts

The Vienna Convention on Succession of States in Respect of State Property, Archives and Debts (1983) — not yet in force but reflecting parts of customary international law — provides the framework. State property situated in the territory of the successor passes to the successor; State archives relating to the territory pass with it; State debts attributable to the territory are apportioned in equitable proportion. The rules are most easily applied to cessions and dissolutions and have been worked through in detail in the dissolution of the Czech and Slovak Federal Republic in 1993 and the dissolution of the SFRY through agreements concluded in the late 1990s and 2000s.

Nationality and succession

Succession also raises questions of nationality. The general principle, developed in customary law and reflected in the ILC's 1999 Draft Articles on Nationality of Natural Persons in Relation to the Succession of States, is that persons habitually resident in the territory affected by succession have the nationality of the successor State, with provision for option for those who would otherwise lose or change their nationality. The principle prevents statelessness as a by-product of succession and protects the legitimate expectations of inhabitants. The detail varies with the type of succession and with the agreements concluded by the successor States, and connects with the body of international human rights law protecting the right to a nationality.

Human-rights treaties and the principle of automatic continuity

A particular question arises with human-rights treaties. Such treaties are not reciprocal in the usual sense; they confer obligations owed to individuals and to the international community as a whole. The ICJ in the Reservations to the Genocide Convention Case (1951) emphasised that contracting States to such conventions have no interests of their own — only the common interest in the accomplishment of the high purposes of the convention. In the Barcelona Traction Case (1970), the Court treated obligations relating to the basic rights of the human person as obligations erga omnes — owed to the international community as a whole. The UN Human Rights Committee has consistently insisted, in the context of the dissolution of Yugoslavia and other successions, that human-rights protections devolve with territory and continue to belong to the people of the territory regardless of changes in government or State succession. General Comment No. 26 (1997) puts the position firmly: once people are accorded the protection of rights under a covenant, that protection continues notwithstanding succession.

Indian law and practice on recognition and succession

India's practice on recognition has followed the British declaratory tradition: recognition is extended once the entity in question is satisfied to have complied with the criteria of statehood and to exercise effective and likely-to-continue control. India's recognition of Bangladesh on 6 December 1971, in the context of its emergence from the partition of Pakistan — and the consequent reordering of obligations on refugees and asylum across India's eastern frontier — was an early and prominent post-Independence example. The same partition era also produced the Extradition Act, 1962, regulating India's bilateral arrangements with successor and continuing States. India has also engaged in significant non-recognition — most notably its refusal to recognise the State of Israel for several decades after 1948 (recognition extended in 1950, full diplomatic relations established only in 1992), and its non-recognition of the Bantustans declared by apartheid South Africa.

On succession, India's position as the continuation of British India was settled at independence. India inherited the international rights and obligations of British India, including UN membership, while Pakistan was treated as a new State requiring fresh admission to the United Nations and fresh accession to the international agreements binding on British India. The pattern is the customary one for partition: the larger or core entity continues; the seceding entity is treated as a new State. Indian courts have approached questions of succession primarily through the lens of municipal law — the Indian Independence Act, 1947, the Government of India Act, 1935, and the Constitution itself — but have routinely cited the international-law doctrine of succession when interpreting the consequences of partition for treaties, property and contracts. The wider Indian practice on the relationship between international and municipal law is treated in the chapter on the Indian Constitution and international law.

Why these doctrines matter today

Recognition and succession remain live problems. Kosovo's declaration of independence in 2008 produced a divided international response — recognition by the United States, the United Kingdom, Germany and most EU States; non-recognition by Russia, Serbia, Spain and Greece. South Sudan's emergence in 2011, the Russian recognition of Abkhazia and South Ossetia in 2008, and the disputed status of Crimea after 2014 — alongside the recognition controversies surveyed in the chapter on landmark ICJ decisions — are all working illustrations. Each forces participating States to evaluate the criteria of statehood, the constitutive and declaratory accounts, and the consequences for treaty regimes from arms control to customary international law on the use of force and territorial integrity. The rules examined in this chapter — discretionary recognition, the effective-control test for governments, the categorisation of treaties for succession purposes, the priority of human-rights protections over the formalities of succession — are the working tools used in those evaluations. The doctrines also feed directly into adjacent fields: the modern law of State jurisdiction, the privileges and immunities of foreign sovereigns and their representatives, and the peaceful settlement of disputes arising from contested transitions in sovereignty. Understanding recognition and succession is, in that sense, an entry point into much of the rest of contemporary international personality.

Frequently asked questions

What is the difference between the constitutive and declaratory theories of recognition?

The constitutive theory holds that an entity becomes a State only by virtue of recognition by other States — that recognition itself confers international legal personality. The declaratory theory holds that recognition is merely the acceptance by States of an already existing factual situation; statehood arises from the satisfaction of the criteria of statehood (population, territory, government, capacity to enter relations) and recognition only declares it. Modern practice and the Yugoslav Arbitration Commission's Opinion No. 1 (1991) treat the declaratory theory as the better view, with the constitutive element surviving only in the domestic-law sense and where the facts are contested.

What are the Tobar and Estrada doctrines?

The Tobar doctrine — the doctrine of legitimacy — proposed that governments coming to power by extra-constitutional means should not be recognised until accepted by the people. It was applied by the United States in Central America in the early twentieth century and elaborated under President Wilson into a policy of democratic legitimacy. The Estrada doctrine, propounded in 1930 by Mexico's Foreign Secretary Genaro Estrada, advocated automatic recognition of governments in all circumstances on the ground that recognition implied a judgment one State should not pass on another. The modern position, adopted by the United States in 1977 and the United Kingdom in 1980, has abolished the formal recognition of governments in favour of focusing on whether to maintain diplomatic relations.

What is the difference between de jure and de facto recognition?

De facto recognition is a hesitant, provisional acceptance of a present factual situation, used where there is doubt about the long-term viability of the entity. De jure recognition is full, definitive recognition, extended where the recognising State accepts that the effective control displayed is permanent and firmly rooted with no legal reason to qualify it. The legal consequences are largely the same, but only a government recognised de jure may bring a property claim in the recognising State's courts, and de facto recognition does not by itself include the exchange of diplomatic relations. De facto recognition may be revoked more easily; de jure recognition is harder to withdraw.

Does succession transfer all the predecessor State's treaty obligations to the successor?

No. The treatment depends on the type of treaty and the type of succession. Territorial treaties — boundaries, navigation rights, demilitarised zones — bind the successor by virtue of attaching to the territory itself, as Articles 11 and 12 of the Vienna Convention on Succession of States in Respect of Treaties (1978) provide. Political treaties — alliance, friendship, neutrality — do not bind the successor. For other treaties, the rules vary: cession applies the moving-frontiers rule (Article 15); unification, separation and dissolution are governed by Articles 31 and 34; and newly independent States created by decolonisation start with a clean slate under Article 16, subject to devolution agreements and unilateral declarations.

What is the principle of uti possidetis juris?

Uti possidetis juris is the principle that the administrative borders of a predecessor entity become the international borders of the new States created out of it. Originating in the early nineteenth-century independence of Spanish South America, the doctrine was formally extended to African decolonisation by resolution 16 of the Heads of State of the Organisation of African Unity in 1964 and applied to post-Cold-War new States by international practice. The ICJ confirmed it in the Frontier Dispute (Burkina Faso v Republic of Mali) Case (1986) and in the Libya/Chad Case (1994). The principle protects the stability of borders against the upheaval of succession.

How was India's status at independence treated under the law of State succession?

India was treated as the continuation of British India for international-law purposes. India inherited British India's UN membership and its international rights and obligations, while Pakistan was treated as a new State requiring fresh admission to the United Nations and fresh accession to existing international agreements. The pattern is the customary one for partition: the larger or core entity continues; the seceding entity is treated as a new State. This was the position adopted by the UN Secretariat in 1947 and accepted in subsequent practice.