John Derbyshire's review of Robert Spencer’s new book, Religion of Peace?—Why Christianity Is and Islam Isn’t:

Christianity Good, Islam Bad?

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Whatever the facts of that, it can hardly be disputed that we have got into the mess we are in with Islam today not so much because of the letter of Islamic theology, or the failure of enough of us to knuckle down to our citizenly duty and read the Koran (personally, I would rather undergo radical dentistry), as because we have executed policies of staggering idiocy.
There are now tens of millions of Muslims living in Christian nations; and this is the case because our nations allowed the tens of millions to enter. We need not have done so. Wise men as long as forty years ago were sounding the alarm about the gross folly of opening our territories to such numbers of strangers with whom we had nothing in common. If Islamia has sunk into the grip of a poisonous ideology—the ideology of jihadism—the Christian West (Spencer actually says “Judeo-Christian,” but that is just a lagniappe) has been seized by an even more destructive ideology: globalization.
The second ideology has in fact been the great enabler of the first. And, very uncomfortably for a Christian apologist like Robert Spencer (so uncomfortably he has not confronted it in this book, nor in any of the other writings of his I have perused; nor have I ever seen it mentioned in the rest of the burgeoning literature of Islamophobia), a great enabler of globalization has been the Christian tradition. If all men are brothers, heathens only a little less enlightened than Christians, they why should not a Pakistani, or a Somali, or for that matter a Mexican, come to live in the U.S.A.? Why should not ten million of each do so? Would it not in fact be un-Christian to refuse entry to those tens of millions? It beggars belief that anyone should hold such a civilizationally-suicidal view, but many Christians do—the current President of the United States, for example.

Robert Spencer promises to answer Derbyshire’s critique.