Didn&#x27;t matter. Pearl Harbor brought the US into the war.<p>If Hitler hadn&#x27;t attacked Russia, things could have been very different.  Hitler thought Russia would be a fast, easy conquest.  It wasn&#x27;t, and Germany found itself in a two-front war.  It cost the USSR 20 million dead to beat Germany, and cost Germany 5 million dead, 80% of German casualties. Germany was an ally of Russia until 45 minutes before the attack. Much of Russian paranoia comes from this.<p>If Germany had consolidated its gains on the continent of Europe without trying to expand beyond that, we might today have a Greater Germany covering much of what&#x27;s now the European Union.  Britain would be on the outside, in the position Taiwan is now with respect to China. Russia would be the big power next door, just as it is to China now. Germany could have cut a peace deal with the US and Britain in that situation.