GUARDYANS.COM

" The Nuremberg International Military Tribunal that took place in 1945 and 1946 solidified the idea that "aggression" is an international crime, and thus assuring that aggression, also known as crimes against peace, is international law due to Customary International Law. As it is Customary International Law, all nations must abide by it, with or without any subsequent treaties. The Nuremberg International Military Tribunal describes aggression as: "To initiate a war of aggression, therefore, is not only an international crime; it is the supreme international crime differing only from other war crimes in that it contains within itself the accumulated evil of the whole."... "(i) Planning, preparation, initiation or waging of a war of aggression or a war in violation of international treaties, agreements or assurances;