Caldwell’s new book is called Reflections on the Revolution in Europe. And, if you don’t quite get the Burkean allusion, his subtitle spells out his real concerns: “Immigration, Islam and the West.” Given my own obsessions in recent years, you’d expect me to be favourably disposed to it. And I am, my enthusiasm only slightly tempered by the instant conventional wisdom that, if you’re only going to buy one Islamophobic Euro-doom-mongering diatribe this summer, Caldwell’s is the sober and respectable one, in striking contrast to certain others we could mention. “Unlike [Oriana] Fallaci and Mark Steyn, Caldwell does not rant...