It will be interesting to see if Pax Europa can hold, or if the continent will return to its historically consistent belligerence.
WW2 was the direct result of that "historically consistent belligerence". Simplified history: lots of tension in Europe -> WW1 -> screw you Germany, we won -> Hitler: we are not having it! -> Germans: that's the guy we need! -> Oops -> WW2.
That why they did it differently post-WW2, focusing more on international collaboration (and a little indoctrination, you don't want to miss an opportunity do you?).
Also, Europe is not the center of the world anymore, they have better things to do than infighting.