CNN's Barbara Starr, Laura Smith-Spark, Mike Mount, Joe Sutton, Elwyn Lopez, Frederik Pleitgen, Dan Rivers, Mitra Mobasherat, Saskya Vandoorne, Laura Perez Maestro, Junko Ogura, Dheepthi Namasivayam, Saad Abedine, Elise Labott and Tim Lister contributed to this report, as did journalists Peter Taggart from Belfast and Said Ben Ali from Algiers.