Though a little incoherent (to me) at a couple of places, Khaled Ahmed's essay, a book review, is worth reading.
Two lines, which make the point:
"The UK borrowed the hardline Islamists from France and the rest of Europe thinking it was acquiring “assets” for its Middle East policy."
"It got to a point where it was difficult to say if radical Islam got exported to Europe or got exported from Europe."
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