Just my two cents, but how we act in europe was ok let's say 30 years ago when people came over and stayed here permanent (and integrated pretty well). But nowadays people come in and they go back and forth between europe and the middle east continuously. Whatever integration they have gone through is wound back each time they go back. Moreover, when they come back they 'teach' the ones that stayed here the 'lost values'. so in the end there is no more integration but more like a group of people that keep the values and customs they had in their originating country. I cannot see any solution without dissolving that group in the local population so that they can pickup our customs and values without being continuously being reeducated with the customs and values of their origine. And at the same time make sure that there is no more going back and forth.
Just my two cents, so don't shoot me if you disagree.
Trying to create a good diode mount....