First of all the The Treaty of Versailles was completely bogus because the Germans though that they were going to go back to the way that they were before WWI but it didn't happen like that and thats goes into all the stipulations on the Treaty that most of us already named or know and thats why the Americans didn't sign the Treaty because they knew it would end up starting another war.

So I think that the war was justified but not what Hitler did to the Jews but the war was justified.