So you are saying that the war would happened 10 years after ? or maybe are you thinking that the situation in Palestinia is better ? no war but a perpetual conflict? I was saying that if there werent a Hitler or a Himmler or a Goeble, the hate would still have been here. Nobody know how the situation would have happened if there werent Hitler. Look for example at the game redalert (I know its a game its not serious but...), the story was the following : Allies fund a way to kill Hitler in 1933 by teleporting themselves in the past. Once they come back they are scared to understand that the situation is worse because the soviets were the one who created the WW2 ... but after, once they were totally prepared.
If the Soviets wanted to wage a war dont forget the germans\' hate toward the french and the allies. Allies would still reject Italia like the way they have done that during the WW2. It would not change anything with Japan... So whats the result ? Allies - URSS VS URSS + Germany + Austria + Italia + Japan... then if you imagine that URSS would have created bombs secretly ... You surely could be able to understand that the WW2 would happened even without Hitler. Moreover, were would the front line be? During the WW2, there were URSS Japan USA So the front line was in the Japan/pacific. Same things with germany and italia : England(/France dont forget the french forces) Germany URSS and the last one : French colony Italia France... now if you realize that if there werent the URSS the direct battle field would have been all around GB and all around USA ... For the first time since the secession war (I am not sure of the way i spell it), USA would be THE battlefield attacked by foreigner countries. Who would win ?
Why this example is so obvious ? simply because of four facts :
1) during the cold war, URSS was about to wage a war against USA. I heard that Kremlin gave his cold war files and that a lot of people were shocked by realizing that the real war was closer than what they imagined.
2)Hitler manipulated Staline by forcing him to kill his greatest generals. Staline was so scared about treason and he simply killed his most important allies

) (What a poor guy!)
->URSS army organization has been shattered
3)URSS lost a lot of people during the WW2 and no one wanted to fight anymore after the WW2 because of all the horror that they saw during the WW2 (at least what they saw in the allies side was already enough to make you runaway)
4)There was a real opposition between the 2 ways of life. Everyone thought they were superior, everyone thought they were in the good side, there was endoctrinment, ...
But without considering science fiction : the consequences of the WW1 were a very bad feeling, a big desire of revenge and still a stupid feeling of superiority. No one abandon their nationalism which was the real fact which drove us to the 2 WW... Everything was designed to create a big delayed-bomb. It simply exploded because it had to explode.