If, after the war in Europe and Japan were over, and the US had built a nuclear arsenal and told Stalin “get out of eastern Europe or else”, it would have been a different world, a different Europe, even a different Asia and Middle East. Didn’t, wasn’t. ;’(
Actually i was thinking more along the lines of not stopping Patton and the 3rd army and let them run all the way to Moscow before the war ended.
Every time we quit a war it comes back to bite us..