Maybe it's too late now, what do I know. But it does seem to me that if the West's pollyanna-minded Leftist leaders had been in touch with reality from the get-go, all (or at least most of) these terrorist fiascos could have been avoided. Viz: RETURN TO SANE IMMIGRATION POLICIES.
What, oh WHAT causes this utterly insane BLINDNESS on their part? It's like a redux of their blindness about Bolshevism.