Nationality Principle

The Nationality Principle is a recognised basis of State jurisdiction under International Law. It allows a State to exercise jurisdiction over the conduct of its nationals even when they are outside the territory of that State. The principle is based on the legal relationship between an individual and the State of which that individual is a national.

Thus:

Nationality → Jurisdiction over the national → Even outside State territory

Meaning of Nationality Principle

Under the Nationality Principle, a State may prescribe laws and, subject to applicable International Law, exercise jurisdiction over its nationals for certain conduct committed outside its territory.

For example:

Indian national commits an offence abroad → India may have jurisdiction based on nationality

The principle is therefore also known as the active personality principle.

Basis of the Principle

The Nationality Principle is based on the idea that nationality creates a continuing legal relationship between:

• the individual; and
• the State.

A national remains legally connected with the State even while residing or travelling abroad.

The principle therefore provides a basis for extraterritorial jurisdiction.

Active Personality Principle

The Nationality Principle is commonly referred to as the active personality principle because jurisdiction is based on the nationality of the person who commits the act.

It must be distinguished from the passive personality principle.

Active Personality

Nationality of the offender.

Passive Personality

Nationality of the victim.

Nationality and Territorial Jurisdiction

Nationality jurisdiction differs from territorial jurisdiction. Nationality Principle Territorial Principle Based on nationality of offender Based on territorial location May apply outside State territory Primarily applies within territory Also called active personality Primary basis of jurisdiction Creates extraterritorial jurisdiction Based on territorial sovereignty

Extraterritorial Jurisdiction

The Nationality Principle is an important basis for extraterritorial jurisdiction.

A State may apply its criminal law to its nationals abroad where its domestic law and International Law permit such jurisdiction.

This can be particularly relevant to:

• serious offences;
• terrorism;
• corruption;
• financial crimes;
• military offences;
• offences specifically covered by treaties.

Criminal Jurisdiction

The principle is most commonly associated with criminal jurisdiction.

A State may provide through its domestic law that its nationals remain subject to certain criminal laws even when they are outside the State.

For example:

National of State A → commits offence in State B → State A may prosecute under its nationality law

The exact scope depends upon the domestic legislation of State A and applicable International Law.

Nationality Must Be Genuine

Nationality is ordinarily established according to the law of the State concerned.

However, questions may arise where an individual possesses:

• dual nationality;
• multiple nationalities;
• disputed nationality;
• nationality obtained shortly before proceedings.

International Law may therefore become relevant in determining the legal significance of nationality.

Dual Nationality

A person may possess the nationality of two States.

For example:

Person → Nationality of State A + Nationality of State B

Both States may potentially claim jurisdiction based on nationality.

This can create competing jurisdictional claims.

Multiple Nationality and Jurisdiction

Where several States consider an individual their national, each may potentially rely upon the nationality principle.

This can create:

• concurrent jurisdiction;
• diplomatic disputes;
• extradition issues;
• competing prosecution claims.

International treaties and domestic laws may provide mechanisms for resolving such conflicts.

Nationality and Extradition

Nationality jurisdiction frequently interacts with extradition.

Suppose:

State A national → commits offence in State B → remains in State A

State B may request extradition.

State A may have its own jurisdiction based on nationality and may, depending on its law and treaty obligations, prosecute the individual domestically instead.

This is closely connected with the principle of aut dedere aut judicare where applicable.

Nationality Principle and Aut Dedere Aut Judicare

The principle of aut dedere aut judicare means “extradite or prosecute.”

Certain international conventions require a State that has custody of an alleged offender to either:

• prosecute the person; or
• extradite the person to a State entitled to prosecute.

The Nationality Principle may provide one of the jurisdictional connections supporting prosecution.

Nationality and Diplomatic Protection

Nationality is also important in diplomatic protection.

A State may, under applicable rules, invoke responsibility on behalf of its national where that national has suffered injury as a result of an internationally wrongful act.

The nationality of the claim is therefore distinct from criminal jurisdiction but demonstrates the broader legal significance of nationality in International Law.

Not Every Act Abroad Creates Automatic Jurisdiction

The Nationality Principle does not mean that a State automatically has unlimited jurisdiction over every act committed by its nationals abroad.

The exercise of jurisdiction depends upon:

• domestic legislation;
• applicable treaties;
• customary International Law;
• the nature of the offence;
• competing jurisdiction of other States.

Therefore:

Nationality provides a jurisdictional connection, but it does not create unlimited extraterritorial authority.

Limits on Enforcement Jurisdiction

A particularly important distinction is between prescriptive jurisdiction and enforcement jurisdiction.

A State may have a legal basis to apply its laws to a national abroad.

However, it generally cannot send its police or other officials into another State’s territory to enforce those laws without:

• consent;
• treaty authority;
• another recognised legal basis.

Thus:

Nationality → Possible prescriptive jurisdiction

but:

Nationality ≠ Automatic right to enforce laws inside another State

Nationality Principle and Territorial Sovereignty

The exercise of nationality jurisdiction must respect the sovereignty of the State where the conduct occurred.

The territorial State may also possess jurisdiction under the territorial principle.

This can result in concurrent jurisdiction.

For example:

Offender: national of State A

Offence committed in State B

Both:

• State A → nationality jurisdiction;
• State B → territorial jurisdiction.

may have a legitimate jurisdictional claim.

Nationality Principle and International Cooperation

When jurisdiction overlaps, States may cooperate through:

• extradition;
• mutual legal assistance;
• transfer of proceedings;
• diplomatic negotiations;
• international conventions.

These mechanisms help avoid conflicting prosecutions and jurisdictional disputes.

Nationality Principle and Corporations

Nationality-based jurisdiction can also raise questions concerning corporations and legal entities.

A corporation may have:

• place of incorporation;
• registered office;
• principal place of business;
• nationality under domestic law.

The applicable basis depends upon the relevant legal framework.

The Nationality Principle is most clearly established in relation to natural persons.

Nationality Principle and Military Personnel

States may exercise nationality-based jurisdiction over their military personnel serving abroad.

This is particularly relevant where military personnel are stationed in another State under:

• Status of Forces Agreements;
• defence agreements;
• international missions.

The applicable agreement may determine how criminal jurisdiction is allocated between the sending and receiving States.

Important Case: S.S. Lotus

The S.S. Lotus (1927) case is an important authority in the broader law of State jurisdiction.

Although primarily concerned with territorial and extraterritorial jurisdiction, the case is relevant to understanding the circumstances in which a State may exercise jurisdiction over conduct occurring outside its territory.

Important Case: Nottebohm

The Nottebohm (Liechtenstein v. Guatemala), 1955 case is important for understanding nationality in International Law.

The International Court of Justice examined the relationship between nationality and diplomatic protection.

The Court emphasised the importance of a genuine connection in the particular context of diplomatic protection.

The case should not, however, be treated as establishing a universal requirement that every nationality must satisfy a single “genuine link” test for every purpose.

Important Case: Barcelona Traction

The Barcelona Traction (1970) case is relevant to the nationality of corporations and diplomatic protection.

The Court distinguished between the nationality of a corporation and the nationality of its shareholders.

It demonstrates the importance of determining the correct nationality connection before exercising international claims.

Nationality Principle vs Passive Personality Principle

Nationality Principle Passive Personality Principle Also called active personality Based on victim’s nationality Offender is a national Victim is a national Focuses on the perpetrator Focuses on the victim Basis for jurisdiction over nationals abroad Basis for jurisdiction over offences affecting nationals abroad

Nationality Principle vs Protective Principle

Nationality Principle Protective Principle Based on nationality of offender Based on threat to vital State interests Focuses on individual-State relationship Focuses on protection of the State Generally concerns nationals abroad May apply to foreign nationals abroad Important in criminal jurisdiction Important for offences threatening State security

Nationality Principle vs Universal Jurisdiction

Nationality Principle Universal Jurisdiction Based on nationality Based on nature of offence Requires a nationality connection Does not necessarily require nationality connection Generally concerns nationals abroad May apply to certain serious international crimes Active personality principle Universality principle

Common Confusions

What is the Nationality Principle?

It allows a State to exercise jurisdiction over its nationals for certain conduct outside its territory.

Is it also called the active personality principle?

Yes.

Is nationality jurisdiction the same as territorial jurisdiction?

No. Territorial jurisdiction is based on where the conduct occurs, while nationality jurisdiction is based on the nationality of the offender.

Can two States have jurisdiction over the same offence?

Yes. For example, the State of nationality may have jurisdiction while the State where the offence occurred may also have territorial jurisdiction.

Does nationality give a State unlimited jurisdiction abroad?

No.

Can a State send police into another country to arrest its national?

Not ordinarily without the consent of the territorial State or another recognised legal basis.

Is active personality the same as passive personality?

No. Active personality concerns the offender’s nationality; passive personality concerns the victim’s nationality.

Is nationality relevant only to criminal jurisdiction?

No. Nationality also has significance in areas such as diplomatic protection and State responsibility.

Topic at a Glance

Point Position Meaning Jurisdiction based on nationality of the offender Alternative name Active personality principle Main application Criminal jurisdiction Territorial basis Not required Extraterritorial application Yes, where legally permitted Dual nationality May create concurrent jurisdiction Territorial State May also have jurisdiction Enforcement abroad Requires separate lawful basis Extradition Closely connected Diplomatic protection Nationality is also important Key authorities S.S. Lotus, Nottebohm, Barcelona Traction

Quick Revision

• The Nationality Principle is a basis of extraterritorial State jurisdiction.
• It is also called the active personality principle.
• Jurisdiction is based on the nationality of the offender.
• It allows a State, subject to applicable law, to regulate or prosecute certain conduct of its nationals committed abroad.
• It is distinct from:
  • territorial jurisdiction;
  • passive personality;
  • protective jurisdiction;
  • universal jurisdiction.
• The State where the offence occurs may also have territorial jurisdiction.
• This can create concurrent jurisdiction.
• Extradition can become important where the offender is located outside the State of nationality.
• Aut dedere aut judicare may apply where an applicable international instrument requires prosecution or extradition.
• Nationality does not provide unlimited authority to enforce laws inside another State.
• Enforcement within foreign territory generally requires consent or another recognised legal basis.
• Nottebohm (1955) is important for the legal significance of nationality in diplomatic protection.
• Barcelona Traction (1970) is important concerning corporate nationality.
• S.S. Lotus (1927) is relevant to the broader principles governing State jurisdiction.
• The essential principle is:

Under the Nationality Principle, a State may exercise jurisdiction over its nationals for certain conduct committed outside its territory, subject to the limitations imposed by International Law.

Conclusion

The Nationality Principle, also known as the active personality principle, is an important basis of extraterritorial jurisdiction. It permits a State, subject to its domestic law and applicable International Law, to exercise jurisdiction over its nationals even when they are outside its territory. The principle is particularly important in criminal law and becomes significant where an offence has connections with more than one State. The State of nationality may claim jurisdiction while the State where the offence occurred may simultaneously exercise territorial jurisdiction. Such overlapping claims can be managed through extradition, mutual legal assistance and other forms of international cooperation. Nationality jurisdiction does not, however, give a State unlimited authority to enforce its laws within another State’s territory. Enforcement action abroad generally requires consent or another recognised legal basis. S.S. Lotus, Nottebohm and Barcelona Traction provide useful authorities for understanding the broader principles of jurisdiction and nationality. Ultimately, the Nationality Principle reflects the continuing legal relationship between a State and its nationals while respecting the territorial sovereignty of other States.