Other Bases of Jurisdiction — Nationality, Protective and Universal; the Lotus Case — Public International Law Notes

Other Bases of Jurisdiction — Nationality, Protective and Universal; the Lotus Case

In 1926 a French steamer, the Lotus, collided with a Turkish ship on the high seas, killing eight Turks. When the Lotus reached Istanbul, Turkey prosecuted the French officer. France protested: only the flag State (France) could try him. The Permanent Court of International Justice sided with Turkey — the effects of the collision were felt on the Turkish vessel, so Turkey could exercise objective-territorial jurisdiction. The Lotus case (1927) has been fought over ever since — and, crucially, its actual result on ship collisions was later reversed by treaty.

The bases beyond territory

Territory is the primary basis, but a State may also claim jurisdiction on four other grounds. Know each with an example.

A. Nationality (personal / active-personality) principle

A State may regulate the conduct of its own nationals wherever they are — even for acts done abroad — because nationality is a permanent bond. (E.g. a State can punish its citizen for bigamy or treason committed abroad.)

B. Passive-personality principle

A State claims jurisdiction because the victim was its national, even though the offender and the act were abroad. This is the most controversial basis. It underlay Mexico’s claim in the Cutting case (1886) — a US national published in Texas a libel against a Mexican, and Mexico prosecuted him when he entered Mexico. The US strongly objected; the principle remains contested.

C. Protective (security) principle

A State may punish acts done abroad by foreigners that threaten its security or vital interests — counterfeiting its currency, espionage, forging its passports, plotting against its government. The act is aimed at the State, so the State may reach it.

D. Universal principle

Certain crimes are so grave and so much the enemy of all mankind (hostis humani generis) that any State may try the offender, whoever and wherever he is: piracy (the classic example), and now war crimes, genocide, crimes against humanity, and slavery. The Eichmann trial (1961) relied partly on universality.

E. The Lotus case and its reversal

The S.S. Lotus (France v. Turkey, PCIJ, 1927) established two things: (1) a State may exercise jurisdiction over acts abroad whose effects occur on its territory or vessels (objective-territorial); and (2) international law leaves States wide freedom — what is not prohibited is permitted. The crucial update: on the specific question of collisions on the high seas, the Lotus result was reversed — Article 97 of UNCLOS (1982) (following the 1958 High Seas Convention) now gives penal jurisdiction over a high-seas collision only to the flag State or the State of the accused’s nationality. Saying this earns real marks.

S.S. Lotus (PCIJ, 1927): “the offence… having its effects on the Turkish vessel… it is impossible to hold that there is a rule of international law prohibiting Turkey from prosecuting” (objective territorial jurisdiction).

In Simple Terms: Beyond ruling its own soil, a State can also reach its own citizens abroad, acts aimed at its security, harm to its own nationals (contested), and universal crimes like piracy that anyone may punish. Lotus said a State may also punish foreign acts whose effects land at home — but for ship collisions on the high seas that specific rule was later handed back to the flag State by Art. 97 UNCLOS.

🧩 WORKED EXAMPLE — libel published abroad (the Cutting problem)

Facts. A, a national of State X, publishes in X an article defaming a citizen of State Y. A later enters Y and is arrested and prosecuted there.

Rule. Objective-territorial and protective/passive-personality principles; the Cutting case (1886) is the parallel.

Apply. The decoy is that “every element happened inside X”. Y argues the effect (harm to its citizen’s reputation) was felt in Y (objective territorial), and/or that the victim was its national (passive personality). X argues territory and nationality of the offender. Passive personality is contested, so Y’s claim is weak unless it can show an effect in Y.

Conclusion. Concurrent claims are possible; Y’s jurisdiction is arguable but rests on the contested passive-personality/effects basis — flag the controversy, do not assert Y wins flatly.

flowchart TD
    A["Bases of jurisdiction"]
    A --> B["Territorial (primary)"]
    A --> C["Nationality (own nationals abroad)"]
    A --> D["Passive personality (victim's State) — contested"]
    A --> E["Protective (security / vital interests)"]
    A --> F["Universal (piracy, war crimes, genocide)"]
    F --> G["Lotus (1927): effects jurisdiction<br/>but reversed on collisions by Art. 97 UNCLOS 1982"]
    classDef box fill:#e8f0fe,stroke:#333,color:#111;
    class A,B,C,D,E,F,G box;

Case Laws

• S.S. Lotus (France v. Turkey, 1927) — objective-territorial (effects) jurisdiction upheld; States are free to act unless a rule forbids it. (Reversed on high-seas collisions by Art. 97 UNCLOS 1982.)
• The Cutting Case (USA v. Mexico, 1886) — the passive-personality/protective claim over a libel published abroad; strongly contested by the US.
• Attorney-General of Israel v. Eichmann (1961–62) — universal jurisdiction over crimes against humanity and war crimes; an illegal seizure does not defeat jurisdiction (male captus bene detentus).

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