The U.S. war on Iran is widely considered an act of aggression violating the UN Charter, raising questions about potential prosecution of its planners. Assessing criminal aggression involves complex legal definitions and scope.

<p>America’s war on Iran is widely considered an illegal act of aggression in clear violation of the United Nations Charter. But assessing whether the war's planners should face prosecution raises difficult questions, largely owing to ongoing uncertainties about the meaning and scope of criminal aggression.</p>