Subjects of International Law
A subject of international law is an entity capable of possessing international legal personality — the capacity to bear rights and obligations and to maintain them by international claims. Traditionally only states were subjects; today the category includes international organisations, individuals, peoples claiming self-determination, NGOs, multinational corporations and belligerent communities in varying degrees.
The capacity to possess international rights and duties and to bring international claims. As the ICJ stated in the Reparations for Injuries Case ICJ Reports 1949, "the subjects of law in any legal system are not necessarily identical in their nature or in the extent of their rights".
The state — primary subject
The Montevideo Convention on Rights and Duties of States 1933 (Article 1) sets out four criteria for statehood:
- A permanent population.
- A defined territory.
- An effective government.
- Capacity to enter into relations with other states.
To these is added the contested fifth criterion of legality — independence not procured by violation of jus cogens (e.g. Manchukuo, Bantustans).
Recognition theories:
- Constitutive theory: statehood depends on recognition by other states (Oppenheim, Anzilotti).
- Declaratory theory: statehood is a fact independent of recognition (favoured today; Lauterpacht).
The Tobar Doctrine (1907) and Estrada Doctrine (1930) address recognition of governments.
International organisations
The ICJ in Reparations for Injuries Case ICJ Reports 1949 confirmed that the United Nations has international legal personality — capacity to bring claims for injury to its agents (the Bernadotte killing case). An international organisation:
- Is established by treaty.
- Has organs and a will distinct from its members.
- Exercises functions on the international plane.
Examples: UN (1945), WHO (1948), WTO (1995), OIC (1969), SAARC (1985), African Union (2002), ASEAN (1967), European Union (1993).
- UN Charter (1945) is the constitutive instrument — Articles 1 (purposes), 2 (principles), 4 (membership), 25 (binding nature of SC decisions).
- Specialised agencies: IMF, IBRD, ILO, FAO, UNESCO, IAEA.
- Regional organisations: EU, AU, OAS, ASEAN, ECOWAS.
- Hybrid bodies: ICAO, IMO, WTO — sectoral regulators.
Individuals
Classical doctrine treated individuals as objects, not subjects. The 20th century recognised limited but real personality:
- Nuremberg Tribunal 1945–46: "Crimes against international law are committed by men, not by abstract entities."
- International human rights law: UDHR 1948, ICCPR 1966, ICESCR 1966, ECHR 1950 (with individual petition before ECHR).
- International criminal law: ICTY, ICTR, ICC (Rome Statute 1998).
- Investment arbitration: ICSID Convention 1965 allows investor–state arbitration.
Peoples and self-determination
The right of self-determination is enshrined in UN Charter Art. 1(2), common Article 1 of the 1966 Covenants, and GA Resolution 1514 (XV) 1960. The Western Sahara Advisory Opinion ICJ 1975 and East Timor Case (Portugal v. Australia) ICJ 1995 affirmed its erga omnes character.
External self-determination (independence) applies primarily in colonial and occupation contexts; internal self-determination (autonomy within an existing state) is the modern norm.
Non-state armed groups and belligerent communities
A belligerent community can acquire limited international personality when:
- It controls territory.
- It has an organised force.
- It conducts hostilities of sufficient intensity.
- It complies with the laws of war.
This was relevant to recognition of insurgents and belligerents in 19th–20th century practice and underpins Common Article 3 of the Geneva Conventions 1949 governing non-international armed conflicts.
Other actors
| Entity | Status |
|---|---|
| Holy See / Vatican City | Sui generis subject; treaty-making capacity |
| Sovereign Order of Malta | Limited personality; diplomatic relations with 100+ states |
| ICRC | Sui generis under Geneva Conventions; immunity |
| Multinational corporations | Generally not subjects; rights via investment treaties |
| NGOs | Operational role; consultative status under ECOSOC Resolution 1996/31 |
| Indigenous peoples | UNDRIP 2007; collective rights recognised |
A CSS question often asks: "Are individuals subjects of international law?" Answer with the doctrinal evolution: Nuremberg (1945) → UDHR (1948) → ICCPR (1966) → ICC (1998). Cite Reparations for Injuries (1949) for the principle that subjects 'need not be identical in nature or extent of rights'. Distinguish active personality (treaty-making) from passive (rights-bearing).
State succession and dissolution
When new states emerge — by decolonisation, dissolution (USSR 1991, Yugoslavia 1991, Czechoslovakia 1993, Sudan 2011) or merger (Yemen 1990, Germany 1990) — questions of succession arise:
- Vienna Convention on Succession of States in Respect of Treaties 1978.
- Vienna Convention on Succession of States in Respect of State Property, Archives and Debts 1983.
- Clean-slate doctrine (treaties): new state starts afresh; tempered by continuity for boundary and human-rights treaties.
Recognition: contemporary practice
Recognition remains predominantly political. Notable contemporary issues:
- Palestine — recognised by 140+ states; non-member observer state at the UN since 2012.
- Kosovo — declared independence 2008; recognised by 100+ states; ICJ Advisory Opinion 2010 found the declaration not in violation of international law.
- Taiwan — de facto state; limited recognition due to PRC's One-China policy.
- South Sudan (2011) — peaceful secession with parent state's consent, admitted to UN as 193rd member.