[marktwain]

Of course another question would have been, what if everyone just stayed out of it and let the Nazis and Bolsheviks bash each others brains in?

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People have speculated in a number of books. The consensus I have read is the NAZIs and the USA fight a number of years later, when the NAZIs are much stronger, the old Soviet Union is a rump state, and the British Empire is much weakened.

There is also the question of if the Soviets developed an atom bomb before us. No war, no Manhattan project...

[dfwgator]

Of course it would have been better if France and Britain (and subsequently the US), stayed out of WWI, and just kept it between Germany, Austria-Hungary and Russia. Would it really have mattered who won between them?