Hitler would be considered a great statesman and probably butterfly away WW2. It is possible, as the USSR gets more aggressive, he can open a round of negotiating to get territory from Poland with the support of Italy, France, and GB. He just has to buy his time and play to the west he's a defense against spreading Bolshevism. Ironically, by 1940-41 with our without a non-aggression pact the USSR was probably going to begin their moves in the East. So, Germany may avert WW2 and by the time nukes enter the scene, continental wars are a no-no and Germany is probably today the world's third largest economy.