We nuked Japan. We, the west, dropped 2 nuclear weapons on an enemy state. Noone else has done that.
USA nuked Japan, not Europe, and I'm still waiting, like a lot of people out there, for the moment where the current US president will publically apologise for this civilian massacre abomination.
The house of Othman ran rampant over the Byzantine empire and the west barely did shit. But then they fucked up when they came into mainland Europe and thought it would be the same. It wasn't. We mounted the largest cavalry charge in all of recorded history and fucked them up.
Even Spain: under the Caliphates, Al-Andalus was a great place to live, but we couldn't let them keep it and even if it took 600 years we fucked them up and took it back.
Mighty European League let all the Balkans go to shit and Hungary/Austria half annexed before they miraculously began to turn the tide, same as with Hispania. There was hundreds years of Mighty European countries sucking Ottoman's/Caliphate dick as vassals or as dominated neighbours, and business ran as usual (killing each others for lands).
You are naive if you think European Union is a natural state of things and that we somehow are superior to others because reasons. Think Roman Empire.
Anyway I dont see the comparison between countries at wars and immigration problems. Too many Europa Universalis will fuck you in the head I guess.