"Ron Paul is “the best-known American propagandist for our enemies”, writes Dorothy Rabinowitz in a recent Wall Street Journal hit piece. To support the charge, she writes that Dr. Paul “assures audiences” that the terrorist attacks of 9/11 “took place only because of U.S. aggression and military actions”. It’s “True,” she writes, that “we’ve heard the assertions before”, but only “rarely have we heard in any American political figure such exclusive concern for, and appreciation of, the motives of those who attacked us”—and, she adds, he doesn’t care about the victims of the attacks. The vindictive rhetoric aside, what is...