Robert Jackson was the Chief of Counsel for the United States in prosecuting the principal Axis War Criminals.
http://www.yale.edu/lawweb/avalon/imt/jack02.htm
“We must make clear to the Germans that the wrong for which their fallen leaders are on trial is not that they lost the war, but that they started it. And we must not allow ourselves to be drawn into a trial of the causes of the war, for our position is that no grievances or policies will justify resort to aggressive war. It is utterly renounced and condemned as an instrument of policy.”