In these countries (and most countries in Europe) it is well beyond the point of "asking" them to leave. They must be forced to leave, and that will probably mean a lot of violence. But there is now not much other choice left if widespread violence and even civil war is to be avoided. Otherwise, they will not leave and instead will force you to submit to their Sharia Law.
Europe is in for a very, very bloody period. So will we be if we don't get ahead of our Muslim immigration problem, fast. Instead, our government is bringing in Muslims daily by the planeloads. We are importing our own massive bloodbath.
O’s policies in the Mid East are producing tens of thousands of more refugees fleeing into Europe and the US. May not be an unintended consequence . . .