Given a chance would you kill baby Hitler?

[abaris]

The personality of Wilhelm ii had a lot to do with Germany's course from 1890-1914.  Killing Wilhelm ii might well have preserved the bismarckian policies and prevented WWI.  No WWI, no hitler.

Actually, another complicated matter. Wilhelm was weak. A sense of grandiosity paired with indecision by all accounts. But there has been an unholy alliance between chancellor Bethman Hollweg and the Austrian minister of foreign affairs Berchtold, who both lied their respective rulers into the war.

No, it doesn't boil down to a single person. If you wanted to kill one single person to prevent WWI, it would be Gavrillo Princip, who never could take the shots at Franz Ferdinand and his wife, thereby preventing the incident setting the wheels in motion. But that of course doesn't say, another one wouldn't have taken his place.

Playing with time is never as easy as it seems.