Under universal jurisdiction, any state in the world may prosecute and try the core international crimes— crimes against humanity, genocide, torture, and war crimes—without any territorial, personal, or national-interest link to the crime in question whenit was committed.The jurisdictional claim is predicated on the atrocious nature of the crime and legally based on treaties or customary international law. Unlike the regime of international criminal tribunals created by the United Nations Security Council and the enforcement regime of the International Criminal Court (ICC), the regime of universal jurisdiction is completely decentralized.