Last Friday, the U.S. government announced it had captured Sulaiman Abu Ghaith, Osama bin Laden’s son-in-law and al Qaeda’s one-time chief propagandist, in Jordan. His capture appeared like a major coup. When the U.S. invaded Taliban-controlled Afghanistan in 2001, Abu Ghaith told Aljazeera, “the planes will not stop,” referring to more 9/11-style attacks. In reality, however, his capture ...