The primary power still rested with the monarchies, and it was they who triggered the pan-European war.
BTW, if Germans were allowed to keep the king after WWI, the political vacuum of Weimar Republic would not be there.
Wrong again. The vacuum came from not finishing the job in the first place in WWI, as opposed to WWII, where German militarism was wiped out.
And what would "finish the job"? Utter destruction of Germany and resulting Communist victory (remember that Communists almost won there)? Neither France, nor England nor Russia had resources to do that.
No, the lesson of post WWI policy was to treat the defeated fairly and kindly - that is why after WWII both Japan and Germany were helped and Japan was allowed to keep the monarchy.
Uh, yeah, wow.
"German militarism" could not be "wiped out," dolt, unless one "wiped out" all the Germans.
The problem was in the settlement agreed to by "Mr. Democracy," Wilson.
And by the way, was Hitler elected?--democratically?