Yeah, sure. I was plaing Poland in 1936 campaign. I have built strong defense line and Germany didn't take Warsaw. Because of Soviet Union didn't attack me from behind (even though all my troops was at wester border) and France and GB never attacked Germany. Results - WWII never happened.
Now tell me - how historical is that?
Russia should attack Poland, Germany and Russia should crush Poland together (if Germany is not strong enough to do it alone) and in the end there should be WWII but it's not possible with your events.
No events please, make it historical by improving AI behaviour (especially by giving different objectives to different countries) - I think that will fit