Pope Francis attends a vigil for peace in St. Peter's Square at the Vatican, Saturday, Sept. 7, 2013. Tens of thousands of people have answered Pope Francis' call and massed in St. Peter's Square for a 4-hour-long prayer vigil for peace in Syria. It was believed to be one of the first, and certainly the largest popular rally in the West against U.S.-led plans to strike Syria following the Aug. 21 chemical weapons attack near Damascus. (AP Photo/Riccardo De Luca)