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 war criminals were in the Pacific Ocean and the seas around the South Pacific and Australia and China.
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.
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