State Jurisdiction under International Law
State jurisdiction under international law refers to the legal authority of a State to make laws, apply those laws through courts and enforce them against persons, property, conduct and events. Jurisdiction arises from State sovereignty, but it is not unlimited. International law determines when a State may exercise jurisdiction and when the sovereignty of another State places restrictions on such exercise.
Key Takeaways
- State jurisdiction is the authority of a State to regulate persons, property, conduct and events through legislative, judicial and executive action.
- Jurisdiction is generally divided into prescriptive jurisdiction, adjudicative jurisdiction and enforcement jurisdiction.
- Territorial jurisdiction is the principal basis of State jurisdiction, allowing a State to regulate conduct occurring within its territory.
- International law also recognises jurisdiction based on nationality, passive personality, protection of vital State interests and, in certain circumstances, universal jurisdiction.
- A State may sometimes prescribe laws concerning conduct occurring outside its territory, but enforcement action within another State generally requires that State’s consent or another recognised legal basis.
- The S.S. Lotus case of 1927 remains an important authority for understanding territorial sovereignty and the limits of State jurisdiction.
- Special rules govern jurisdiction over ships, aircraft, international crimes and persons protected by international immunities, meaning the existence of jurisdiction does not always permit its unrestricted exercise.
What Is State Jurisdiction under International Law?
State jurisdiction under international law means the legal competence of a State to regulate conduct, persons, property and events.
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It is an important part of public international law, which regulates legal relationships between States and other recognised participants in the international legal system.
State jurisdiction determines whether a State can:
- make a law applicable to particular conduct;
- bring a person before its courts;
- conduct criminal or civil proceedings;
- arrest, investigate or prosecute an individual;
- regulate activities occurring outside its territory; or
- enforce judicial or administrative decisions.
Jurisdiction is closely connected with the concept of State sovereignty. A sovereign State normally exercises authority over its territory and persons present within that territory.
However, modern activities frequently cross national boundaries. A crime may be planned in one State and completed in another. A national may commit an offence abroad. Cyber activity may originate in one country while causing harm in several others. Ships and aircraft regularly operate beyond the territory of the State whose nationality they possess.
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International law therefore recognises several bases on which jurisdiction may be exercised.
What Is the Relationship Between Sovereignty and State Jurisdiction?
Sovereignty gives a State authority over its territory, but international law regulates the manner in which that authority may be exercised.
One of the basic principles is that a State ordinarily cannot exercise coercive governmental authority within the territory of another State without permission.
The Permanent Court of International Justice explained this principle in the S.S. Lotus case. The Court stated that one of the foremost restrictions imposed by international law is that, in the absence of a permissive rule, a State may not exercise its power in the territory of another State.
This principle is particularly important when distinguishing between making laws with extraterritorial application and physically enforcing those laws abroad.
For example, a State may sometimes make conduct occurring abroad an offence under its domestic law. That does not automatically permit its police officers to enter the foreign State and arrest the alleged offender.
What Are the Types of State Jurisdiction?
State jurisdiction is commonly understood through three related forms:
- Prescriptive or legislative jurisdiction
- Adjudicative or judicial jurisdiction
- Enforcement or executive jurisdiction
These forms of jurisdiction must be distinguished because the legal rules governing them are not always identical.
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Prescriptive or Legislative Jurisdiction
Prescriptive jurisdiction refers to the authority of a State to make laws governing particular persons, conduct, relationships or events.
For example, a State may enact criminal laws applicable to offences committed within its territory. In appropriate circumstances, its legislation may also apply to certain offences committed abroad by its nationals.
The question at this stage is whether international law permits the State to extend its law to the matter concerned.
Adjudicative or Judicial Jurisdiction
Adjudicative jurisdiction refers to the authority of courts and tribunals of a State to hear and decide cases.
A domestic court may exercise adjudicative jurisdiction where the legal system provides jurisdiction and international law does not prohibit its exercise.
Judicial jurisdiction may arise in criminal, civil, commercial and administrative proceedings.
Enforcement or Executive Jurisdiction
Enforcement jurisdiction concerns the authority of a State to compel compliance with its laws.
It includes acts such as:
- arresting an accused person;
- carrying out searches;
- seizing property;
- executing court orders;
- conducting official investigations; and
- imposing or collecting penalties.
Enforcement jurisdiction is particularly territorial. A State normally cannot send its police or other public authorities into the territory of another sovereign State to enforce domestic law without consent, treaty authority or another recognised legal basis.
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What Are the Main Bases of State Jurisdiction?
International law recognises several principles connecting a State with conduct occurring either within or outside its territory.
The most important are:
- territorial principle;
- nationality or active personality principle;
- passive personality principle;
- protective principle; and
- universal jurisdiction.
These principles operate within the wider framework governing the subjects of international law and the rights and duties recognised under the international legal system.
What Is the Territorial Principle?
The territorial principle allows a State to exercise jurisdiction over persons, property, acts and events occurring within its territory.
It is the most fundamental and widely accepted basis of jurisdiction under international law.
A State normally has jurisdiction over:
- crimes committed within its territory;
- contracts made or performed within its territory;
- property situated within its territory;
- businesses operating within its territory; and
- persons physically present within its territory.
Territorial jurisdiction follows directly from territorial sovereignty.
Subjective Territorial Principle
The subjective territorial principle applies where an offence or relevant conduct begins within the territory of the State, even though it may be completed elsewhere.
For example, a criminal act initiated in State A through conduct performed there may produce its final result in State B.
State A may claim jurisdiction because an essential part of the conduct occurred within its territory.
Objective Territorial Principle
The objective territorial principle applies where conduct occurring outside the State produces a substantial element or consequence within the State.
Thus, an act may begin in State A but have its legally relevant effect in State B. State B may claim jurisdiction because the consequences occurred within its territory.
The approach was relevant to the reasoning surrounding the S.S. Lotus case (France v. Turkey), where consequences arose on a Turkish ship following a collision on the high seas. The case remains one of the most important decisions for understanding jurisdiction beyond territorial boundaries.
What Is the Effects Doctrine?
The effects doctrine is related to objective territorial jurisdiction.
Under this approach, a State may seek to regulate foreign conduct that produces or is intended to produce substantial effects within its territory.
The doctrine has particular significance in areas such as:
- competition law;
- economic regulation;
- securities regulation;
- transnational commercial activities; and
- certain forms of cyber activity.
Its precise scope depends considerably on the field of law, domestic legislation and applicable international obligations. It should therefore not be treated as an unlimited authority to regulate all foreign conduct producing some indirect consequence within a State.
What Is the Nationality Principle?
The nationality principle, also called the active personality principle, permits a State to exercise jurisdiction over its nationals for certain conduct committed outside its territory.
The basis of jurisdiction is the legal connection between the individual and the State of nationality.
Nationality has wider significance under international law because it establishes a legal relationship between an individual and a State. The position and implications of nationality are also relevant to the study of individuals under international law.
For example, domestic legislation may make specified serious offences punishable even when committed abroad by a citizen.
The nationality principle is particularly significant where the territorial State does not prosecute the conduct or where the offence concerns interests that the national State considers important.
Nationality jurisdiction does not mean that every domestic law automatically applies to nationals everywhere. The extent of extraterritorial application depends upon the legislation concerned and applicable rules of international law.
What Is the Passive Personality Principle?
The passive personality principle allows a State to claim jurisdiction over certain offences committed abroad because the victim is one of its nationals.
Unlike the active personality principle, which focuses on the nationality of the offender, passive personality focuses on the nationality of the victim.
Suppose a national of State A suffers a serious criminal offence in State B at the hands of a national of State C. State A may, where permitted by its law and international law, claim jurisdiction on the basis that its national was the victim.
Historically, passive personality jurisdiction was more controversial than territorial or nationality jurisdiction. Its acceptance has nevertheless increased, particularly for serious transnational offences and offences addressed through treaty regimes.
For example, Article 5 of the Convention against Torture provides for the possibility of establishing jurisdiction where the victim is a national of the State concerned, if that State considers such jurisdiction appropriate.
What Is the Protective Principle?
The protective principle allows a State to exercise jurisdiction over certain conduct occurring abroad when that conduct threatens important interests or security of the State.
The principle focuses on the nature of the interest threatened rather than the nationality of the offender or victim.
It may be relevant to offences involving matters such as:
- national security;
- counterfeiting of currency;
- espionage;
- attacks against governmental institutions;
- falsification of official documents; or
- serious threats against fundamental State functions.
The protective principle cannot reasonably be understood as permitting jurisdiction merely because a foreign act is politically or economically inconvenient. A substantial connection with essential State interests is ordinarily required.
What Is Universal Jurisdiction?
Universal jurisdiction refers to jurisdiction exercised over certain exceptionally serious offences even when there is no ordinary territorial or nationality connection between the offence and the State exercising jurisdiction.
Unlike territorial, nationality and passive personality jurisdiction, universal jurisdiction is based primarily upon the character of the offence.
It is associated with certain crimes regarded as matters of concern to the international community.
However, universal jurisdiction must be explained carefully. There is no single rule providing that every international crime may automatically be prosecuted by every State in every circumstance.
Its precise scope may depend on:
- customary international law;
- applicable treaties;
- domestic implementing legislation;
- presence of the accused;
- immunities recognised under international law; and
- procedural requirements imposed by national law.
The scope and application of universal jurisdiction have continued to receive consideration within the United Nations, reflecting differences among States regarding its exact limits.
Universal jurisdiction should therefore be distinguished from treaty-based duties requiring States to establish jurisdiction in particular circumstances.
How Does the Convention Against Torture Deal With Jurisdiction?
The Convention against Torture and Other Cruel, Inhuman or Degrading Treatment or Punishment provides an important example of treaty-based jurisdiction.
Article 5 requires States Parties to establish jurisdiction in specified circumstances, including where:
- the offence is committed in territory under the State’s jurisdiction;
- the alleged offender is a national of that State; and
- in certain circumstances, where the victim is a national of the State.
The Convention also requires jurisdiction in situations where an alleged offender is present in territory under the State’s jurisdiction and the State does not extradite that person in circumstances covered by the Convention.
This illustrates how international agreements can create specific jurisdictional obligations. The broader legal framework governing the creation, operation and binding force of such agreements forms part of the law of treaties in international law.
What Is Concurrent Jurisdiction?
Concurrent jurisdiction arises when more than one State has a recognised basis for exercising jurisdiction over the same conduct.
For example:
- an offence may be committed in State A;
- the accused may be a national of State B;
- the victim may be a national of State C; and
- part of the harmful effect may occur in State D.
Different jurisdictional principles could therefore potentially connect several States with the same offence.
International law does not necessarily require that only one State possess jurisdiction.
Questions may then arise concerning:
- extradition;
- transfer of criminal proceedings;
- international cooperation;
- evidence sharing;
- double jeopardy protections under applicable law;
- treaty obligations; and
- prosecutorial discretion.
Concurrent jurisdiction is especially common in transnational criminal matters.
What Is Extraterritorial Jurisdiction?
Extraterritorial jurisdiction means jurisdiction exercised in relation to conduct, persons or events located outside the territorial boundaries of the State.
Extraterritorial jurisdiction may be based upon:
- nationality of the offender;
- nationality of the victim;
- effects occurring within the State;
- protection of fundamental State interests;
- treaty obligations; or
- universal jurisdiction in legally recognised circumstances.
Extraterritorial prescriptive jurisdiction must be distinguished from extraterritorial enforcement.
A State may sometimes lawfully apply its legislation to overseas conduct but remain prohibited from physically enforcing that law within another State without consent.
This distinction is one of the most important aspects of State jurisdiction under international law.
What Happened in the S.S. Lotus Case?
The S.S. Lotus (France v Turkey), 1927 is one of the most important cases concerning jurisdiction in international law.
The case arose from a collision on the high seas between the French vessel Lotus and the Turkish vessel Boz-Kourt. The Turkish vessel sank, and Turkish nationals died.
After the French ship arrived in Constantinople, Turkish authorities instituted criminal proceedings against Lieutenant Demons, the French officer who had been on watch aboard the Lotus.
France challenged Turkey’s jurisdiction.
The Permanent Court of International Justice held that Turkey’s exercise of jurisdiction had not been shown to violate international law.
The case became particularly important for two principles.
First, international law generally prohibits one State from exercising governmental power within the territory of another State without a permissive basis.
Second, the Court did not treat territoriality as an absolute rule preventing States from extending their laws to acts committed outside their territory where an acceptable jurisdictional connection exists.
The broader implications of the Lotus judgment must nevertheless be understood in light of later treaties, customary rules and developments in international law.
How Is Jurisdiction Exercised Over Ships?
International maritime law contains specialised jurisdictional rules.
The United Nations Convention on the Law of the Sea (UNCLOS) provides an important framework.
Ships on the High Seas
Article 92 of UNCLOS provides that ships generally sail under the flag of one State and, subject to recognised exceptions, remain under the exclusive jurisdiction of the flag State on the high seas.
Article 94 further requires every flag State to effectively exercise jurisdiction and control over ships flying its flag in administrative, technical and social matters.
Foreign Ships in the Territorial Sea
The position differs when a foreign vessel passes through another State’s territorial sea.
Article 27 of UNCLOS limits the circumstances in which the coastal State should exercise criminal jurisdiction aboard a foreign ship merely passing through its territorial sea.
Relevant circumstances include cases where:
- consequences of the crime extend to the coastal State;
- the crime disturbs the peace of the country or good order of the territorial sea;
- assistance has been requested by the ship’s master or diplomatic or consular representative of the flag State; or
- action is necessary for suppressing illicit traffic in narcotic drugs or psychotropic substances.
Thus, jurisdiction at sea depends heavily upon the maritime zone, nationality of the vessel and applicable treaty provisions.
What Is Jurisdiction over Aircraft?
Aircraft are also subject to specialised jurisdictional rules.
The State in which an aircraft is registered has an important jurisdictional connection with that aircraft. At the same time, territorial States may exercise jurisdiction where conduct occurring on or involving an aircraft affects their territory or falls within applicable treaty rules.
International aviation conventions establish detailed arrangements concerning offences committed aboard aircraft and offences affecting aviation security.
Accordingly, jurisdiction involving aircraft cannot be determined solely by ordinary territorial principles. The relevant international aviation treaty regime and domestic legislation must also be examined.
What Are the Limits on State Jurisdiction?
The existence of a jurisdictional connection does not mean that State authority can be exercised without restriction.
Important limitations arise from several areas of international law.
Territorial Sovereignty of Other States
A State cannot ordinarily conduct coercive enforcement operations within another State’s territory without consent or an applicable international legal basis.
This remains a fundamental limitation upon enforcement jurisdiction.
State Immunity
Foreign States may enjoy immunity from the jurisdiction of domestic courts in circumstances recognised by international law.
Modern State immunity generally distinguishes between sovereign governmental acts and, under many national systems and conventions, certain commercial activities.
Jurisdiction and immunity are separate concepts. A court may otherwise possess jurisdiction over a dispute but still be prevented from exercising it because immunity applies.
Immunity of State Officials
Certain State officials may possess immunity from foreign jurisdiction under international law.
The applicable immunity depends upon matters such as the person’s office, the nature of the proceedings, the conduct involved and whether immunity is personal or functional.
Questions of immunity must therefore be considered independently from the existence of a substantive basis of jurisdiction.
Diplomatic and Consular Immunities
Diplomats and consular officials receive protections under specialised treaty regimes, particularly the Vienna Conventions governing diplomatic and consular relations.
These immunities restrict how territorial jurisdiction may be exercised against protected persons.
Treaty Obligations
States may accept jurisdictional restrictions or duties through international treaties.
Treaties concerning criminal cooperation, human rights, terrorism, torture, aviation, maritime law and transnational crime may determine when jurisdiction must or may be established.
What Is the Difference Between Jurisdiction and Immunity?
Jurisdiction and immunity deal with different questions.
Jurisdiction asks whether a State or its courts possess legal authority over a person, event or dispute.
Immunity asks whether international law prevents that jurisdiction from being exercised against a particular State, official or protected person.
Therefore:
| Basis | Jurisdiction | Immunity |
| Main question | Does the State have authority over the matter? | Is the person or State protected from that authority being exercised? |
| Source | Territoriality, nationality, treaties and other jurisdictional principles | Customary international law and treaties |
| Effect | Establishes legal competence | Restricts exercise of otherwise existing competence |
| Examples | Territorial or nationality jurisdiction | State, diplomatic or certain official immunities |
The distinction is especially important in international criminal proceedings and cases involving foreign officials.
Difference Between the Main Principles of State Jurisdiction
| Principle | Main Connecting Factor | Basic Application |
| Territorial Principle | Place where conduct occurs | Acts committed within the State |
| Objective Territorial Principle | Consequences within the State | Foreign conduct causing relevant domestic effects |
| Nationality Principle | Nationality of offender | Conduct abroad by the State’s nationals |
| Passive Personality Principle | Nationality of victim | Foreign offence against the State’s national |
| Protective Principle | Essential State interests | Foreign conduct threatening security or fundamental governmental interests |
| Universal Jurisdiction | Nature of offence | Certain serious offences regardless of ordinary territorial or nationality links |
These principles may overlap. The same conduct may therefore fall within the jurisdiction of several States.
Why Is State Jurisdiction Important in International Law?
State jurisdiction performs an important balancing function.
On one side lies the sovereign authority of each State to regulate affairs connected with its territory, nationals and legitimate interests.
On the other lies the sovereign equality and territorial independence of other States.
Rules concerning jurisdiction prevent international relations from being governed solely by unilateral assertions of power.
They are particularly significant in modern legal problems involving:
- transnational crime;
- terrorism;
- cyber activities;
- multinational corporations;
- international trade;
- crimes committed abroad;
- maritime activity;
- aviation;
- human rights violations; and
- international criminal law.
As cross-border activity increases, disputes concerning overlapping and extraterritorial jurisdiction have become increasingly significant.
Conclusion
State jurisdiction under international law determines the circumstances in which a State may make laws, adjudicate disputes and enforce legal rules against persons, property and conduct. Although territorial jurisdiction remains the primary foundation, international law recognises several additional principles, including nationality, passive personality, protection of essential State interests and, in appropriate cases, universal jurisdiction.
The distinction between prescriptive, adjudicative and enforcement jurisdiction is crucial. International law may permit a State to regulate certain foreign conduct without permitting it to carry out coercive enforcement measures in another State’s territory.
The S.S. Lotus case remains an important starting point for understanding these principles, particularly the relationship between sovereignty, territoriality and extraterritorial jurisdiction. Modern treaties such as UNCLOS and the Convention against Torture have further developed specialised jurisdictional rules.
Ultimately, State jurisdiction reflects a balance between the authority of an individual State and the sovereign rights of other members of the international community. Understanding the different jurisdictional principles is therefore essential for studying public international law, international criminal law and modern transnational legal disputes.
Note: This article was originally written by Krishankant Sharma (Jagarn Lakecity University) and published on 07 June 2020. It was subsequently updated by the LawBhoomi team on 23 September 2026.
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