The war criminals were in the Pacific Ocean and the seas around the South Pacific and Australia and China.
I would say the Pacific and East Asia, but others would have different names, most probably the Pacific, regarding it as a single theater of war.
The Nuremberg Trials...
There weren't any "war criminals" during the cold war, because the cold war WAS NOT a war. The Cold War was simply a term that politician's came up with regarding the arms race between the communist...
Since it involved two or more nations, yes.