prior the war Stalin espoused "socialism in one country. So WI after the war he and his successors continue that. Say by the time they get the Nuclear Bomb and the PCR wins the Chinese civil war, the USSR deems that it is not necessary to spread communism themselves any more since they are secure. And go full isolationist, focus long on domestic issues, this also includes not supporting any revolutionary groups or wasting their men, material and money on things outside their borders. How would this effect the world as it becomes clear that the bear is going to sleep. How would the Americans, brits and Chinese react.