The International Criminal Court is established to prosecute individuals for genocide, crimes against humanity, war crimes and the crime of aggression.

The International Criminal Court (ICC) is an intergovernmental organization and international tribunal seated in The Hague, Netherlands. Established in 2002 under the multilateral Rome Statute, the ICC is the first and only permanent international court with jurisdiction to prosecute individuals for the international crimes of genocide, crimes against humanity, war crimes, and the crime of aggression. The ICC is intended to complement, not replace, national judicial systems; it can exercise its jurisdiction only when national courts are unwilling or unable to prosecute criminals. It is distinct from the International Court of Justice, an organ of the United Nations that hears disputes between states.

Genocide is violence that targets individuals because of their membership of a group and aims at the destruction of a people. Raphael Lemkin, who coined the term, defined genocide as "the destruction of a nation or of an ethnic group" by means such as "the disintegration of [its] political and social institutions, of [its] culture, language, national feelings, religion, and [its] economic existence". During the struggle to ratify the Genocide Convention, powerful countries restricted Lemkin's definition to exclude their own actions from being classified as genocide, ultimately limiting it to any of five "acts committed with intent to destroy, in whole or in part, a national, ethnical, racial or religious group". While there are many scholarly definitions of genocide, almost all international bodies of law officially adjudicate the crime of genocide pursuant to the Genocide Convention.

Crimes against humanity are certain serious crimes committed as part of a large-scale attack against civilians. Unlike war crimes, crimes against humanity can be committed during both peace and war and against a state's own nationals as well as foreign nationals. Together with war crimes, genocide, and the crime of aggression, crimes against humanity are one of the core crimes of international criminal law and, like other crimes against international law, have no temporal or jurisdictional limitations on prosecution.