A U.S. drone attack in Yemen struck a group of people who were traveling to a wedding on Thursday, killing at least 17. A Yemeni security official said some of the dead may have been members of al-Qaeda, but most were civilians. The attack occurred in a remote area near the central town of Rada. It was at least the second U.S. drone strike in Yemen this week after an attack in an eastern province killed at least three people on Monday.