Egyptian policemen stand in front of a bomb-damaged national security building in northern Cairo's district of Shubra on August 20, 2015. A car bomb wounded six Egyptian policemen as it exploded in front of a police building, the interior ministry said, the latest in a wave of militant attacks that has rocked Egypt. AFP PHOTO / KHALED DESOUKI (Photo credit should read KHALED DESOUKI/AFP/Getty Images)
