How IS’s black flag became the symbol of modern jihad

PARIS – Whether fluttering over the ruins of a captured city in Iraq or Syria, or in the background of gruesome execution videos, the black flag used by the Islamic State group has become an instantly recognisable symbol of modern global jihad.

Along with its slick Hollywood-style propaganda videos, experts say IS has harnessed bygone apocalyptic prophecies and Islamic symbols to carve out a brand even more potent than Al-Qaeda at the height of its notoriety.