On Oct. 24, Saudi air defenses intercepted two ballistic missiles heading toward the regions of Makkah and Madinah. Debris fell in four places between Jeddah and Taif. Six days later, a drone was shot down near Makkah. The Houthis denied targeting the holy cities, saying they aimed only at oil facilities and military bases. That denial deserves a legal answer because it rests on a misunderstanding of the law. International humanitarian law does not ask only what an attacker says it was aiming at