The U.S., U.K. and France broke the wall of despots that kept a lid on the real bad guys. Once they were gone, then the ISIS types had free reign (funded by the same western nations), and now they are driving a horde of people to the west, and Europe will collapse because they never recovered from the past 100 years of killing themselves. It’s like what happened to Rome after they took in all of the people driven into it by the Hun.
Short of a serious spat of nationalist revolutions to take the place back, Europe is finished.