Jurisdiction and Consent
Why state consent is the foundation of ICJ jurisdiction and how it shapes the Court's power.
The Consent Principle
The ICJ's jurisdiction over contentious cases rests entirely on state consent. No state can be compelled to appear before the Court against its will. This principle, known as consensual jurisdiction, distinguishes international courts from domestic courts, where defendants have no choice about being sued. Consent can be given in advance (through Optional Clause declarations or treaty clauses) or ad hoc (through special agreements), but it must exist.
This requirement reflects the sovereign equality of states. In a system where no state is subordinate to another, adjudication can only proceed with the agreement of those involved. The consent principle is both the ICJ's greatest limitation and its source of legitimacy: judgments are respected precisely because states chose to be bound.