Telling displaced people in the Mideast they need to stay in their own region, among their own co-religionists and Arabic speakers, is NOT harsh.
There is (or should be) plenty of safe places. This should be the posture of the West. Europe, America, etc.
Tell Saudi Arabia, Egypt, etc. "Look, you made these fanatics. It is your religion. You keep everybody here. We'll give you some money, but you keep all of your people, here."
Contact Frau Merkel, and give her the speech in German.