Hey guys, i am currently playing the Europe campaign in SP as France on hard/hard, and have currently driven the Prussians back to Berlin, which is now they're only region. I have signed a peace treaty with them, as the Russians are attacking Poland and i didn't want to be fighting on two fronts, but obviously the capture of Berlin is one of my victory conditions, basically i need to know, is it possible to get Prussia to become one of my Protectorates, or will i need to eventually break the peace treaty? Cheers.