Aggression (International Law)

"Nations agreed to amend the Rome Statute, which set up the Court, to define the crime of aggression as 'the planning, preparation, initiation or execution, by a person in a position effectively to exercise control over or to direct the political or military action of a State, of an act of aggression which, by its character, gravity and scale, constitutes a manifest violation of the Charter of the United Nations.'"

crimes against peace (including war of aggression), war crimes, and crimes against humanity are punishable as crimes under international law