States in International Law

States in International Law

Introduction

States are the central traditional subjects of international law.

International law regulates relationships among states, establishes rights and obligations between them, determines the circumstances in which states may exercise jurisdiction, and provides rules governing responsibility when states violate international obligations. States also create much of international law through treaties, customary international law, and participation in international institutions.

Understanding the role of states is therefore essential to understanding international law itself.

A state is not simply a country in the geographical or political sense. In international law, statehood has specific legal significance. A political community may have a population, territory, and government without every question concerning its international legal status being settled. Conversely, the international legal consequences of statehood extend far beyond control of territory.

For an introductory overview, the Cornell Law School Legal Information Institute’s Wex materials on international law provide a useful reference point for the broader international legal framework.

The law of states addresses fundamental questions:

• What is a state?
• What characteristics are required for statehood?
• What does sovereignty mean?
• Does recognition create a state or merely acknowledge an existing legal reality?
• What rights and obligations does a state possess?
• How does a state exercise jurisdiction?
• What happens when a state changes its territory or government?
• When is a state’s conduct internationally wrongful?
• Can a state be sued in another country’s courts?
• What happens when a state disappears, merges, divides, or becomes independent?

These questions form part of the foundation of public international law.

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What Is a State in International Law?

A state is a territorial political community possessing the characteristics required for international legal personality and capable of participating in international relations.

The traditional formulation is associated with the Montevideo Convention on the Rights and Duties of States of 1933.

Article 1 of the Convention identifies four commonly cited criteria:

1. a permanent population;
2. a defined territory;
3. government; and
4. capacity to enter into relations with other states.

These criteria are frequently used as a starting point when analyzing statehood.

They should not, however, be treated as a mechanical checklist that answers every difficult case.

Statehood is ultimately a question of international law and international practice. Political circumstances, recognition, effective governmental authority, self-determination, territorial disputes, and the particular historical circumstances of a political entity can all complicate the analysis.

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The Permanent Population

A state normally requires a permanent population.

This does not mean that the population must be large.

States vary enormously in population size. Some contain hundreds of millions of people, while others have populations of only a few thousand.

Nor must the population be ethnically, linguistically, culturally, or religiously homogeneous.

A state may contain many different communities.

The requirement simply reflects the idea that a state must have a stable human community associated with the territorial and political entity.

Population therefore distinguishes a state from an uninhabited geographical area or a temporary gathering of people.

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Defined Territory

A state normally requires a defined territory.

Territory provides the geographical foundation upon which state sovereignty operates.

The territory of a state may include:

• land territory;
• internal waters;
• territorial sea, subject to international law;
• the airspace above its territory and territorial sea;
• certain maritime zones in which international law grants particular rights.

A defined territory does not necessarily mean that every boundary must be undisputed.

This is an important distinction.

Many states have territorial disputes with neighboring states. The existence of a boundary dispute does not automatically prevent statehood.

International law can recognize a state even where the precise location of part of its boundary remains contested.

The requirement is therefore better understood as requiring an identifiable territorial basis rather than perfectly settled borders.

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Government

A state must ordinarily possess a government or political authority capable of exercising public power.

Government is important because international law requires a legal entity capable of acting on behalf of the state.

Governmental authority may include the ability to:

• administer territory;
• maintain public institutions;
• create and enforce domestic law;
• conduct foreign relations;
• enter into international agreements;
• represent the state internationally.

The effectiveness of government can become particularly important in cases involving civil war, occupation, state collapse, competing governments, or decolonization.

A state may continue to exist even when its government temporarily loses effective control over part of its territory.

Consequently, statehood and effective governmental control are related but not identical concepts.

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Capacity to Enter Into International Relations

The fourth traditional criterion is capacity to enter into relations with other states.

This reflects the international personality of the state.

A state must be capable of acting as an independent participant in international relations.

This includes the capacity, subject to applicable international law, to:

• negotiate treaties;
• establish diplomatic relations;
• participate in international organizations;
• make international claims;
• incur international obligations;
• incur international responsibility;
• enjoy certain immunities;
• exercise rights under international law.

This criterion helps distinguish sovereign states from entities that possess substantial internal autonomy but remain legally dependent upon another state.

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Statehood and International Legal Personality

Statehood is closely connected with the concept of international legal personality.

An entity with international legal personality can possess rights and obligations under international law and can participate in international legal processes.

States possess the most comprehensive and traditional form of international legal personality.

They can generally:

• make treaties;
• bring international claims;
• incur international responsibility;
• participate in international organizations;
• exercise jurisdiction;
• enjoy sovereign immunities;
• invoke certain protections under international law.

Other entities can also possess international legal personality.

International organizations, for example, may possess legal personality for purposes related to their functions.

Individuals can also possess international rights and obligations, particularly in international human rights law and international criminal law.

Nevertheless, the state remains the foundational subject of the traditional international legal order.

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Sovereignty

One of the most important concepts associated with statehood is sovereignty.

Sovereignty refers broadly to the state’s supreme authority within its legal order and its independence in relation to other states.

Sovereignty has both internal and external dimensions.

Internal sovereignty

Internally, sovereignty concerns the state’s authority over its territory, institutions, population, and domestic legal system.

External sovereignty

Externally, sovereignty concerns the state’s independence from the authority of other states.

The principle of sovereign equality means that states are legally equal as states even though they may differ enormously in population, territory, military strength, economic power, or political influence.

A small state and a major global power do not possess equal practical power.

They nevertheless possess the same basic status as sovereign states under international law.

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Sovereign Equality of States

Sovereign equality is a fundamental principle of the international legal system.

It does not mean that all states have identical circumstances.

It means that states possess equal sovereign status.

The principle is reflected in the United Nations Charter and is fundamental to the organization of international relations.

Sovereign equality supports principles such as:

• territorial integrity;
• political independence;
• non-intervention;
• diplomatic equality;
• the legal personality of states.

At the same time, international law sometimes gives states different institutional rights.

For example, the permanent members of the United Nations Security Council possess veto powers that other states do not.

This illustrates the distinction between sovereign equality and institutional equality.

States may be equal in sovereign status while occupying different positions within particular international institutions.

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Recognition of States

One of the most debated questions in international law is the relationship between statehood and recognition.

When one state recognizes another political entity as a state, what exactly happens?

Two broad approaches are traditionally discussed.

The Constitutive Approach

Under a constitutive approach, recognition plays an important role in creating or confirming the international legal personality of an entity.

In its strongest form, the theory suggests that an entity becomes an international legal person through recognition by existing states.

The Declaratory Approach

Under the declaratory approach, statehood depends primarily upon whether the entity satisfies the relevant legal criteria.

Recognition does not create the state.

Instead, recognition acknowledges an existing legal situation.

Modern international law does not reduce every recognition question to either theory in a completely pure form.

Recognition remains highly significant politically and legally, but statehood is not necessarily created simply because another state decides to recognize an entity.

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Recognition Is Not the Same as Statehood

Recognition and statehood should therefore be distinguished.

A political entity may claim to be a state without receiving universal recognition.

At the same time, widespread recognition can strongly influence an entity’s ability to participate in international relations.

Recognition may affect:

• diplomatic relations;
• treaty participation;
• membership in international organizations;
• access to international courts;
• immunity;
• control over state assets;
• diplomatic property;
• practical international dealings.

Recognition therefore has substantial legal and practical consequences even though it does not provide a simple answer to every statehood question.

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De Facto and De Jure Government

International law may distinguish between the state itself and the government that represents it.

A state can continue to exist even when control over its government changes.

The distinction can become important during:

• revolutions;
• coups;
• civil wars;
• occupations;
• disputed elections;
• governmental collapse;
• competing claims to governmental authority.

International recognition may sometimes concern not whether a state exists, but which authority is entitled to represent that state internationally.

This distinction is crucial.

The disappearance of a particular government does not necessarily mean the disappearance of the state.

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States and Governments Are Not the Same Thing

A state is a continuing legal entity.

A government is the institution or authority exercising governmental power on behalf of that state.

Governments can change while states remain legally continuous.

For example, a change of government does not ordinarily terminate the state’s existing treaties, property rights, or international obligations.

This principle of continuity is essential to international relations.

Otherwise, every governmental change could potentially erase the state’s existing international commitments.

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State Continuity

State continuity means that the legal identity of a state may continue despite major political changes.

A state may experience:

• a change of government;
• constitutional transformation;
• revolution;
• change in political system;
• territorial adjustments;
• economic restructuring.

None of these events necessarily creates a new state.

The question is whether the international legal identity of the state continues.

This becomes particularly important when determining responsibility for debts, treaties, diplomatic property, international claims, and other legal relationships.

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State Succession

State succession occurs when responsibility for the international relations of territory changes from one state to another.

State succession can arise in situations involving:

• decolonization;
• separation of territory;
• dissolution of a state;
• merger of states;
• transfer of territory;
• creation of a newly independent state.

State succession raises difficult questions concerning:

• treaties;
• state property;
• public debts;
• archives;
• nationality;
• international organizations;
• territorial boundaries;
• legal claims.

There is no single rule that automatically produces the same result in every succession situation.

The applicable law depends upon the nature of the territorial and political transformation.

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Secession

Secession occurs when part of the territory of an existing state separates and seeks to establish itself as an independent state.

Secession is one of the most politically sensitive subjects in international law.

International law recognizes the principle of self-determination, particularly in the context of peoples under colonial domination and foreign occupation.

But the existence of a right of self-determination does not automatically mean that every territorial group possesses an unlimited unilateral right to secede from an existing state.

The relationship between:

• self-determination;
• territorial integrity;
• political independence;
• constitutional law;
• international recognition

can be extremely complex.

The legality and international consequences of particular attempts at secession must therefore be analyzed individually.

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Self-Determination and Statehood

The principle of self-determination has played a major role in the development of modern international law.

It was particularly important during decolonization, when peoples under colonial rule sought independence and the creation of sovereign states.

Self-determination means, broadly, that peoples have a right to determine their political status and pursue their political, economic, social, and cultural development.

Its precise application outside classic colonial situations remains contested.

Self-determination should therefore not automatically be equated with a universal right of unilateral secession.

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Territory and Territorial Sovereignty

A state exercises sovereignty over its territory subject to international law.

Territorial sovereignty generally includes authority over:

• persons within the territory;
• domestic institutions;
• natural resources;
• land;
• internal waters;
• territorial sea, subject to international rules;
• airspace.

But territorial sovereignty is not unlimited.

International law imposes obligations concerning:

• human rights;
• diplomatic relations;
• international humanitarian law;
• environmental protection;
• treaty obligations;
• neighboring states;
• international waterways;
• the use of force.

Sovereignty therefore means legal independence, not unlimited freedom from international obligations.

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Territorial Integrity

The principle of territorial integrity protects the territorial unity of states against unlawful external interference and certain forms of coercive territorial acquisition.

It is closely connected with the prohibition on the use of force.

A state cannot lawfully acquire another state’s territory simply by military conquest.

Modern international law fundamentally rejects the idea that territorial expansion through unlawful force can itself create legitimate title to territory.

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Jurisdiction of States

States possess jurisdiction — the legal authority to regulate conduct, persons, property, and events.

The most familiar basis is territorial jurisdiction.

A state generally has authority over conduct occurring within its territory.

But international law recognizes other bases of jurisdiction.

These may include:

Nationality jurisdiction

A state may regulate certain conduct of its nationals even when they are abroad.

Protective jurisdiction

A state may exercise jurisdiction over conduct outside its territory that threatens certain vital interests, subject to international law.

Passive personality jurisdiction

In some circumstances, a state may assert jurisdiction because one of its nationals was the victim of conduct occurring abroad.

Universal jurisdiction

For certain particularly serious international crimes, international law may permit states to exercise jurisdiction regardless of the ordinary territorial or nationality connection.

The precise scope of each basis of jurisdiction is governed by international law.

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Prescriptive, Adjudicative, and Enforcement Jurisdiction

Jurisdiction is not a single concept.

It can be divided into different forms.

Prescriptive jurisdiction concerns a state’s authority to make laws applicable to particular conduct or persons.

Adjudicative jurisdiction concerns the authority of courts and tribunals to hear and determine legal disputes.

Enforcement jurisdiction concerns the authority to enforce laws through governmental measures.

This distinction is extremely important.

A state may have a legitimate basis for prescribing rules concerning conduct occurring abroad without necessarily having unlimited authority to physically enforce those rules inside another state’s territory.

Enforcement within another state’s territory generally raises much stronger sovereignty concerns.

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Non-Intervention

State sovereignty is closely connected to the principle of non-intervention.

States generally may not intervene unlawfully in matters within the domestic jurisdiction of another state.

The principle protects political independence and territorial sovereignty.

However, determining whether conduct constitutes unlawful intervention can be complicated.

International law distinguishes between ordinary diplomatic criticism, lawful international measures, economic relations, and coercive interference designed to dictate another state’s choices.

The precise circumstances matter.

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The Prohibition on the Use of Force

One of the most fundamental restrictions on state conduct is the prohibition on the use of force in international relations.

The United Nations Charter establishes a general prohibition on the threat or use of force against the territorial integrity or political independence of states, subject to the exceptions and framework recognized by international law.

The most important commonly recognized exceptions include:

• Security Council authorization under the UN Charter system;
• self-defense under the conditions recognized by international law.

The prohibition on force represents one of the clearest examples of the fact that sovereignty does not mean unlimited freedom of action.

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States as Creators of International Law

States are not merely subjects that obey international law.

They are also major creators of international law.

States contribute to the formation of international law through:

• treaties;
• customary international practice;
• diplomatic practice;
• participation in international organizations;
• international conferences;
• acceptance of jurisdiction;
• statements concerning legal obligations.

Treaties are particularly important because states deliberately create written legal commitments.

Customary international law can also develop through sufficiently general practice accompanied by opinio juris.

Thus, states occupy a dual position:

They are both participants in and principal architects of the international legal system.

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Treaty-Making Capacity

States generally possess the capacity to conclude treaties.

Treaties can regulate virtually every area of international relations, including:

• trade;
• human rights;
• environmental protection;
• taxation;
• extradition;
• diplomatic relations;
• security;
• maritime boundaries;
• international transportation;
• investment.

A state’s treaty-making capacity is therefore one of the most important consequences of international legal personality.

Treaties also create legal obligations that may survive changes in government.

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Diplomatic Relations

States may establish diplomatic relations with other states.

Diplomatic relations provide mechanisms for:

• communication;
• negotiation;
• representation;
• dispute resolution;
• protection of interests;
• international cooperation.

Diplomatic law provides special protections for diplomatic missions and diplomatic agents.

These protections are not simply privileges granted out of courtesy.

They exist because effective diplomacy requires representatives to be able to perform their functions without improper interference.

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State Immunity

States also generally enjoy sovereign immunity from the jurisdiction of foreign courts, subject to important exceptions.

The basic principle reflects the equality and independence of sovereign states.

Modern approaches commonly distinguish between:

• sovereign or public acts, and
• commercial or private acts.

Many legal systems recognize restrictive approaches under which immunity may not apply to certain commercial activities.

State immunity is therefore not an absolute shield against every foreign legal proceeding.

Its scope depends upon applicable international law and the domestic law of the forum state.

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State Responsibility

States can incur international responsibility when they commit internationally wrongful acts.

The basic concept is straightforward:

If a state violates an international legal obligation attributable to that state, legal consequences may follow.

State responsibility can arise from conduct involving:

• governmental authorities;
• public officials;
• state organs;
• persons exercising governmental authority;
• certain conduct of private actors under circumstances recognized by international law.

The consequences can include:

• cessation of wrongful conduct;
• assurances of non-repetition where appropriate;
• restitution;
• compensation;
• satisfaction.

State responsibility therefore connects the abstract concept of statehood with concrete legal accountability.

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Attribution of Conduct to the State

Not every act performed by a person within a state is automatically an act of the state.

International law contains rules determining when conduct can be attributed to a state.

Conduct of state organs is generally attributable to the state.

The analysis can become more complicated when dealing with:

• officials acting outside their authority;
• private persons;
• armed groups;
• entities exercising governmental functions;
• persons acting under state instructions or control.

Attribution is therefore a central issue in determining whether an internationally wrongful act is legally the responsibility of the state.

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International Claims by States

States can assert claims against other states for violations of international law.

A state may invoke international responsibility where another state has breached an obligation owed to it.

Historically, diplomatic protection has provided one important mechanism through which a state may raise claims concerning injuries suffered by its nationals.

International courts and tribunals may also exercise jurisdiction over disputes where the relevant states have consented to their jurisdiction.

Consent remains an important feature of international adjudication.

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Consent and International Courts

Unlike many domestic legal systems, international courts do not generally possess unlimited compulsory jurisdiction over all states.

States must normally have accepted the relevant basis of jurisdiction.

Consent may arise through:

• a treaty;
• a special agreement;
• a jurisdictional clause;
• a declaration accepting compulsory jurisdiction;
• another recognized legal basis.

This reflects the sovereign structure of international law.

The existence of an international court does not automatically mean that every state can be brought before it in every dispute.

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States and International Organizations

States increasingly operate through international organizations.

The United Nations, regional organizations, international financial institutions, and specialized agencies provide institutional structures for international cooperation.

International organizations can possess their own legal personality and powers.

Nevertheless, states remain central because states establish most international organizations and define their powers through constituent treaties.

This creates an important distinction:

International organizations are institutional actors, but their authority is generally derived from the legal instruments through which states establish them.

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States and Individuals

Modern international law is no longer exclusively concerned with states.

Individuals can possess international rights.

International human rights treaties may provide individuals with substantive protections and, in certain systems, access to international or regional complaint mechanisms.

Individuals can also bear direct responsibility under international criminal law for crimes such as genocide, crimes against humanity, and war crimes.

The development of these fields has therefore transformed international law.

The state remains central, but it is no longer accurate to describe individuals as legally invisible at the international level.

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States and Non-State Actors

International law also interacts with a broad range of non-state actors, including:

• international organizations;
• multinational corporations;
• non-governmental organizations;
• armed groups;
• indigenous peoples;
• individuals;
• transnational institutions.

These actors do not necessarily possess the same legal personality as states.

Their rights, duties, and legal capacities vary considerably.

The modern international legal order is therefore more complex than a simple system consisting exclusively of sovereign states.

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Fragile States and State Failure

Statehood does not automatically disappear when a government becomes weak or ineffective.

A state may experience:

• civil war;
• governmental collapse;
• loss of territorial control;
• economic breakdown;
• competing authorities;
• widespread violence.

Yet the international legal identity of the state may continue.

This distinction is important because the international community generally does not treat governmental dysfunction as automatically creating a legal vacuum in which the state’s territory becomes available for acquisition by others.

State failure is therefore primarily a problem of governance and security, not an automatic termination of statehood.

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Occupation and Statehood

Military occupation creates another important distinction.

Occupation occurs when foreign military forces exercise effective control over territory without acquiring sovereignty over that territory.

The occupying power does not automatically become the sovereign of the occupied territory.

International humanitarian law regulates occupation and imposes duties upon the occupying power.

This illustrates the difference between effective control and legal title.

A state may temporarily lose effective control over territory while retaining its legal claim to sovereignty.

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Neutrality

Some states adopt or maintain a position of neutrality in relation to armed conflicts.

Neutrality involves specific legal consequences concerning the relationship between a neutral state and states engaged in hostilities.

A neutral state is not simply a state that has no opinion about a conflict.

Neutrality can involve legal obligations concerning:

• military assistance;
• belligerent access;
• territory;
• arms;
• passage;
• treatment of combatants.

The exact rules depend upon applicable international law and the nature of the conflict.

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Maritime States and the Law of the Sea

Statehood also has important consequences in maritime law.

Coastal states exercise different forms of authority over maritime zones, including:

• internal waters;
• territorial sea;
• contiguous zone;
• exclusive economic zone;
• continental shelf.

These zones do not all give the coastal state the same rights.

For example, sovereignty over the territorial sea differs significantly from the sovereign rights associated with the exclusive economic zone.

The law of the sea therefore demonstrates that sovereignty can be geographically and functionally differentiated by international law.

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States and International Peace

States have a central role in maintaining international peace and security.

They may:

• negotiate agreements;
• participate in collective security systems;
• settle disputes peacefully;
• cooperate against international crimes;
• participate in peacekeeping operations;
• impose or comply with international sanctions;
• participate in international institutions.

At the same time, states can also be the principal source of threats to international peace.

International law therefore simultaneously recognizes states as sovereign actors and subjects their conduct to legal restrictions designed to preserve international stability.

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Can a State Be Criminally Responsible?

The question of state responsibility must be distinguished from individual criminal responsibility.

Individuals can be prosecuted for international crimes.

States, by contrast, are generally addressed through the law of international responsibility rather than through criminal prosecution in the same sense.

A state’s internationally wrongful act can produce legal consequences without transforming the state into a criminal defendant in an international criminal court.

This distinction is fundamental.

State responsibility and individual criminal responsibility are separate legal regimes.

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Can a State Lose Its Sovereignty?

Sovereignty can be limited through international law without necessarily disappearing.

States voluntarily undertake treaty obligations that restrict aspects of their freedom of action.

They may also accept international dispute-settlement mechanisms or become members of organizations whose constituent instruments create binding obligations.

Such limitations do not ordinarily mean that the state has ceased to be sovereign.

Rather, sovereignty in the modern international legal order includes the capacity to undertake international obligations.

A sovereign state is therefore not a state that has no legal obligations.

It is a state possessing international legal personality and independence while operating within the international legal system.

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The Modern Meaning of State Sovereignty

The traditional image of sovereignty as absolute power has largely disappeared from modern international law.

Contemporary sovereignty is better understood as legally structured independence.

States possess substantial authority over their territory and domestic affairs, but they are also bound by international obligations concerning:

• human rights;
• international peace and security;
• treaties;
• diplomatic relations;
• international humanitarian law;
• environmental obligations;
• maritime law;
• international criminal cooperation;
• state responsibility.

Sovereignty therefore does not stand outside international law.

It exists within international law.

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States in a Changing International Legal System

The importance of states has not disappeared, but their role has evolved.

International law today includes institutions and actors that were far less significant when the modern international legal system was first developing.

International organizations exercise substantial functions.

Individuals possess international rights and can bear international criminal responsibility.

Corporations operate across borders.

Global markets create economic relationships that no individual state can completely control.

Cyber operations, artificial intelligence, climate change, outer space, biotechnology, and transnational crime create problems that frequently cross territorial boundaries.

Yet states remain indispensable.

States still control territory, maintain governments, make treaties, participate in international organizations, contribute to customary international law, and bear responsibility for internationally wrongful conduct.

The international legal system has therefore expanded rather than simply moved beyond the state.

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The Difference Between a State and a Nation

The terms state and nation are often used interchangeably in ordinary language, but they have different meanings.

A state is a legal and political entity possessing international legal personality.

A nation generally refers to a people associated with a shared identity, history, culture, language, or political consciousness.

A nation does not necessarily constitute a state.

A state may also contain several nations or national communities.

This distinction becomes particularly important when discussing nationalism, self-determination, minority rights, and independence movements.

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The Difference Between a State and a Country

In everyday language, “state” and “country” are often synonyms.

In international law, however, state has the more precise legal meaning.

“Country” is primarily an ordinary-language term referring to a territory or political community.

“State” identifies an entity possessing the characteristics and legal status associated with statehood.

The distinction becomes particularly useful when analyzing disputed territories and entities with uncertain international status.

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The Difference Between a State and a Government

A state is not the same as its government.

Governments change.

States ordinarily continue.

A government may be replaced through:

• elections;
• constitutional change;
• revolution;
• military takeover;
• resignation;
• political transition.

The state’s international legal identity may remain unchanged.

Consequently, international obligations normally belong to the state rather than simply to the particular administration currently exercising governmental power.

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Why States Remain Central to International Law

States remain central because they combine several characteristics that few other international actors possess.

A state generally has:

• territory;
• population;
• government;
• sovereignty;
• international legal personality;
• treaty-making capacity;
• jurisdiction;
• responsibility under international law;
• diplomatic capacity;
• participation in international institutions.

This combination gives states a unique position.

International law has become increasingly pluralistic, but the state remains the principal organizing unit of the international legal system.

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Common Misconceptions About States in International Law

Misconception 1: A state must have completely undisputed borders

Not necessarily. A territorial dispute does not automatically eliminate statehood.

Misconception 2: Recognition automatically creates a state

Recognition is highly significant, but statehood and recognition are legally distinct concepts.

Misconception 3: A change of government creates a new state

Normally, it does not. States generally continue despite changes of government.

Misconception 4: Sovereignty means unlimited power

Modern international law places substantial legal limits on sovereign states.

Misconception 5: Only states have international legal personality

States have the most comprehensive form of international legal personality, but international organizations and individuals can also possess international rights or legal capacities.

Misconception 6: A state that loses effective control over territory automatically ceases to exist

Not necessarily. Statehood can continue despite governmental collapse, civil war, or occupation.

Misconception 7: State responsibility and individual criminal responsibility are the same

They are different legal regimes.

Misconception 8: A nation and a state are always the same thing

They are not. A nation can exist without having its own sovereign state, and a state can contain multiple national communities.

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Key Takeaways

• A state is a central subject of international law and possesses international legal personality.
• The traditional criteria of statehood include permanent population, defined territory, government, and capacity to enter into international relations.
• Statehood and recognition are related but distinct concepts.
• Sovereignty means legal independence and authority, not unlimited freedom from international obligations.
• States are legally sovereign and equal even though they differ greatly in political, economic, military, and demographic power.
• States and governments are different legal concepts.
• Governments may change while the state continues.
• State succession can occur when international responsibility for territory changes.
• Self-determination has played a major role in the development of statehood, particularly during decolonization.
• States possess different forms of jurisdiction, including territorial and nationality-based jurisdiction.
• International law restricts state conduct through principles such as non-intervention and the prohibition on the unlawful use of force.
• States create international law through treaties, customary international law, and participation in international institutions.
• States can incur international responsibility for internationally wrongful acts.
• State immunity protects sovereign states from certain foreign judicial proceedings, subject to important exceptions.
• International organizations and individuals have acquired important roles in modern international law, but states remain its central traditional actors.
• Statehood can continue despite governmental collapse, occupation, or major political transformation.
• The modern international legal order treats sovereignty as legally structured independence, rather than absolute power.

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Frequently Asked Questions

What is a state under international law?

A state is a territorial political community possessing the characteristics necessary for international legal personality. The traditional criteria include a permanent population, defined territory, government, and capacity to enter into relations with other states.

What are the four Montevideo Convention criteria for statehood?

The traditional criteria are a permanent population, defined territory, government, and capacity to enter into relations with other states.

Does recognition create a state?

Recognition is highly important in international relations, but statehood and recognition are distinct concepts. Under the declaratory approach, recognition acknowledges rather than creates statehood.

What is sovereignty?

Sovereignty refers broadly to a state’s authority within its territory and its independence from other states, subject to the obligations imposed by international law.

Can a state exist without a strong government?

A state can sometimes continue to exist despite governmental weakness, civil war, or loss of effective control over territory. Statehood and effective governmental control are not always identical.

Can a government change without the state changing?

Yes. Elections, revolutions, constitutional transformations, or other changes of government do not ordinarily terminate the international legal identity of the state.

What is state succession?

State succession concerns situations in which responsibility for the international relations of territory changes from one state to another, such as through dissolution, separation, merger, or decolonization.

What is the difference between a state and a nation?

A state is a legal and political entity possessing international legal personality. A nation generally describes a people sharing some form of collective identity. A nation does not necessarily have its own sovereign state.

Can states be held responsible for violations of international law?

Yes. A state may incur international responsibility when conduct attributable to it constitutes a breach of an international obligation.

Can individuals be responsible under international law?

Yes. Modern international law recognizes individual rights and, in certain circumstances, direct individual responsibility for international crimes.

Does sovereignty mean a state can do whatever it wants?

No. Sovereign states are bound by international law, including treaty obligations, customary international law, rules concerning the use of force, human rights obligations, diplomatic law, and the law governing international responsibility.

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Conclusion

States remain the foundational actors of the international legal system.

Their importance arises not merely from political power but from their distinctive legal status. A state possesses territory, population, governmental authority, sovereignty, international legal personality, jurisdiction, treaty-making capacity, and responsibility under international law.

At the same time, the modern concept of statehood is considerably more sophisticated than the simple idea of an independent territory governed by a government.

Statehood interacts with recognition, self-determination, territorial integrity, sovereignty, international organizations, human rights, international criminal law, and state responsibility. States can change governments without disappearing, lose effective control over territory without necessarily losing their legal identity, and undertake extensive international obligations without ceasing to be sovereign.

The modern international legal order is also no longer exclusively state-centered. International organizations, individuals, corporations, and other actors increasingly participate in international legal relationships.

Nevertheless, the state remains the principal organizing structure of international law.

Understanding states therefore provides the foundation for understanding nearly every other branch of public international law: treaties, jurisdiction, diplomatic relations, state responsibility, international organizations, use of force, human rights, international humanitarian law, the law of the sea, and the recognition of new political entities.

The international legal system may be changing, but the state remains at its center.