International Criminal Court

An empty international-style hearing room with a witness station, interpretation headset, and glass partition

International Criminal Court Explainer

The International Criminal Court, or ICC, is a permanent international court established by the Rome Statute to investigate and try individuals for specified grave crimes. Its subject matter includes genocide, crimes against humanity, war crimes, and the crime of aggression under the applicable conditions. It addresses individual criminal responsibility rather than simply resolving disputes between governments. This distinguishes it from the International Court of Justice. The ICC is also an independent institution with a relationship to the United Nations, rather than a UN court with identical authority.

Jurisdiction is a threshold issue. The court cannot investigate every alleged offense anywhere merely because it attracts international attention. For genocide, crimes against humanity, and war crimes, relevant routes include connections to a state party, a state’s acceptance of jurisdiction, or a Security Council referral. Timing and other legal requirements also matter. The crime of aggression has additional jurisdictional conditions. Identifying the legal route prevents a political demand for action from being mistaken for a determination that the court has authority over the case.

The ICC complements national criminal systems. Under the principle of complementarity, national proceedings are central, and the court’s role depends on whether relevant states are genuinely willing and able to investigate or prosecute. A case also moves through distinct procedural stages. Investigation, an arrest warrant, confirmation of charges, trial, and appeal do not have the same meaning. The accused is presumed innocent, and the prosecution bears the burden of proof. A warrant therefore should not be reported as though it were already a conviction.

The court relies on cooperation from states and other actors because it does not have its own police force. Arrests, transfers, evidence, and enforcement can consequently present practical challenges separate from a judicial decision. Public debate often combines questions of law, diplomacy, and political support, but those questions should still be distinguished. Understanding a reported ICC development requires identifying the crime alleged, jurisdictional basis, stage of proceedings, and cooperation needed. That approach explains what the institution can legally decide and what must happen for its decisions to have practical effect.

The ICC addresses individual criminal responsibility for specified international crimes. It has a different role from the International Court of Justice.

The Rome Statute defines its powers and jurisdiction. International attention alone does not establish authority.

Jurisdiction can depend on state connections, acceptance, or a Security Council referral. The precise conditions must be assessed.

Complementarity gives national criminal proceedings a central role. Genuine willingness and ability affect the ICC’s involvement.

Warrants and convictions are separate stages. The presumption of innocence continues during proceedings.

The court depends on cooperation for arrests and enforcement. Legal decisions and practical implementation are distinct questions.

Explore more "Explainers"

Discover additional explainers across politics, science, business, technology, and other fields. Each explainer breaks down a complex idea into clear, everyday language—helping you better understand how major concepts, systems, and debates shape the world around us.