Yes, and the war in Europe ended before the Germans built a bomb (they were trying, but had not made much progress), and like you said many of their best minds

Yes, and the war in Europe ended before the Germans built a bomb (they were trying, but had not made much progress), and like you said many of their best minds were in the US. I think in a situation where the Americans didn't build an A bomb then no one would have for some time. Would it have made a difference to our world now? It's hard to tell, but the Soviets certainly would have taken more Japanese territory than they did in our timeline. My opinion was Stalin was too pragmatic to start WWIII, Before and after WWII he only provided limited support to Soviet-aligned groups (see: post-war France and the Spanish or Greek civil wars) in other part of the world to avoid antagonizing the west too much. The real answer is, who knows?