A Turkish cosmetics company that ran a controversial online ad for its hair removal product has defended itself, arguing that it featured a notorious al-Qaeda militant “for his hair, not terrorism.” The ad for the hair removal product reads, in Turkish, “Waiting won’t get rid of that hair!” or, more literally, “The hair will not go away because you keep waiting!” The slogan is accompanied by a photo of Khalid Sheikh Mohammed, the Pakistani former al-Qaeda leader who is best known as the mastermind of the Sept. 11 attack. Mohammed is currently being held in U.S. military custody in Guantánamo...