U.S. armed forces have committed war crimes in various wars in which they've been engaged throughout history. Most — but not all — contemporary war crimes are defined by the International Criminal Court (ICC), the Geneva Conventions, and the associated laws of war under international law. War crimes can be prosecuted through the War Crimes Act of 1996 in the United States, but the US government does not accept the jurisdiction of the ICC over its military forces. United States violations of the laws of war falling under the rubric of jus in bello are discussed in the present article, while US violations of jus ad bellum, such as crimes against peace or wars of aggression under the Nuremberg Principles, are discussed elsewhere.