USA, Russia, and China would never wage war on each other. They are not run by retards, the leaders of each of those countries know it would be absolutely devastating. IMO if shit did it the fan it would be China vs. India (they fucking hate each other). Iran versus Israel (making USA jump in); if USA came in to defend Israel, all of the middle-east (with the exception of Saudia Arabia and Pakistan). would go to war with the USA. Europe would join Israel/USA, India would ally the middle-east, China would ally with USA. Russia would sit pretty for a long time, then jump in to help USA, China,Europe.....war over. Middle-east is fully under allied control. All of the middle east would turn into what japan has.