When I spied the U.S. News & World Report with the Crusades splashed across its cover, I braced for the worst. As a crusade historian, I long ago learned not to expect accuracy on this subject from the popular media. In fact, I usually avoid newspaper and magazine articles on the Crusades altogether, if only to keep my blood pressure under control. But there it was, staring me in the face. I had to read it. First, the good news. The article, written by Andrew Curry, was not dreadful. Curry did take the time to phone two distinguished crusade scholars,...