Most people assume international law has always had a permanent criminal court. It had not. On July 17, 1998, a five-week diplomatic conference in Rome concluded with a vote. One hundred twenty states adopted the Rome Statute of the International Criminal Court. Seven nations, including the United States, China, and Israel, voted against it. Twenty-one abstained. The treaty required sixty ratifications to come into force. It achieved that number in April 2002, and the ICC, headquartered in The Hague, became a reality.
The court’s jurisdiction covers genocide, crimes against humanity, war crimes, and the crime of aggression. Its creation marked a philosophical shift. The Nuremberg and Tokyo tribunals were victors’ justice. The ad-hoc courts for Rwanda and the former Yugoslavia were created by the UN Security Council for specific conflicts. The ICC was designed as a standing, independent body. Its mandate is to act when national courts are unwilling or unable to prosecute. The principle of complementarity, not supremacy, is its foundation.
A common misunderstanding is that the ICC is a United Nations organ. It is an independent institution with a relationship agreement with the UN. Another is that it can prosecute any individual from any country. In practice, its jurisdiction is complex, triggered when a crime occurs on the territory of a state party, is committed by a national of a state party, or is referred by the UN Security Council. The court has no police force. It relies on state cooperation for arrests and evidence, a structural weakness its critics frequently cite.
The ICC’s impact is measured in deterrence, symbolism, and controversy. It has issued arrest warrants for heads of state, like Sudan’s Omar al-Bashir, and convicted militia leaders from the Democratic Republic of the Congo. Its investigations have been accused of focusing disproportionately on Africa, though situations in Georgia, Afghanistan, and Palestine are also under examination. The court’s very existence asserts a global norm: that sovereignty does not grant a license for mass atrocity. Its practical power, however, remains constrained by the politics of the world it seeks to judge.