Before he killed or wounded 54 Americans at Fort Hood on November 5, army psychiatrist Nidal Hasan had raised eyebrows with his Islamic proselytizing, which he carried on even when he was supposed to be conducting medical briefings. One such presentation has come to light: the June 2007 briefing which Hasan gave to other doctors at the Walter Reed Army Medical Center. Hasan’s PowerPoint slides say many of the same things found in jihadist literature and propaganda throughout the Middle East and among its apologists here in America. Hasan’s Islam is rooted in traditional understandings of the faith as taught...