Uganda (CNN) — One of the attorneys who prosecuted Nazi war criminals at the end of World War II cautioned the United States, Russia and China on Wednesday over their opposition to the final inclusion of “crimes of aggression” in the mandate for the International Criminal Court.”Crimes of aggression” were initially included in the court’s Rome Statute of 1998, but unlike the other three crimes put under the tribunal’s jurisdiction — genocide, crimes against humanity and war crimes — crimes of aggression were not defined and jurisdictional conditions were not set.