Others have linked, but I have just gotten round to reading John Derbyshire's review of Robert Spencer new book, Religion of Peace?: Why Christianity Is and Islam Isn't: [Book Review] Christianity Good, Islam Bad?. It is well worth reading, not so much for what it says about the book, but for what Derbyshire's criticisms tell us about the weaknesses we bear in the fight both against Jihadism and more generally in maintaining our national identity that has served us so well all these years.

Spencer's rejoinder is here, and Derbyshire's brief response, here.