IIRC, the Soviet Union didn't test their first bomb until 1949, well after the war ended. Are you suggesting that the Soviets stopped their advance because of the American bomb?
Edit: Oh, I just noticed the bit in your comment about the 1950s/60s. So your contention is that the war might have reignited had there been no atomic bomb?
Stalin's and Communist Party's goal was to "free the world of capitalist oppression", had US not had built a Nuke, Russians would not have stopped at Berlin.
The Russians were hit hard in WW2 but still in 1945 they were in far better position than any other Eurasian state. They would have swept over Europe in a single campaign if they could. And even Americans would be hard pressed at stopping them, without the nuclear weapons since US would be heavily tied in pacific dealing with Japan. And it wouldn't take a strategic genius to fathom an alliance between Japan and USSR, Soviets take the Europe, Japanese take the Asia.
Don't forget that in 1945 Russians were already all over Germany, they took Vienna, Yugoslavia was under their direct influence. Without US and their display of might in Pacific, there would be nothing preventing them from taking the Europe, and Stalin knew it.
That's probably why Soviets kinda kept a low profile for until the 1949.
Thanks for the reply. I always thought the Russians had been lost more people, materiel, etc. than anyone else and were pretty much done in by the end of the war. (I'm not sure where I got that idea, now that I examine it.)
The Russians indeed lost more people and material than anyone else.
The weird fact is that they lost 26 million due to military, but they lost 10 million to their own internal political oppression.
In either case, USSR had 200 million population in June 1941. At the end of 1945 the population was 170 million[1]. So they still had "plenty" of manpower left.
Also material losses were indeed huge, but mostly because complete disregard for safety of personnel and equipment. They could always replenish their losses at faster rate than their enemies (USSR had vast industry and material base), very inefficient but still huge.
For example. Germans built 6500 JU-87 Stuka assault planes[2] during whole war. Soviets have build 43.000 IL-2 Sturmovik assault planes from 1942-1945[3]. Since Germans had air superiority on eastern front, Soviets would just send in Sturmovik's without air cover.
There's an expression here in eastern Europe for overwhelming numbers, in literal translation it would go something as: "There is as many of them as Russians".
Edit: Oh, I just noticed the bit in your comment about the 1950s/60s. So your contention is that the war might have reignited had there been no atomic bomb?