Iraqi Shiite fighters from Tal Afar, loyal to Grand Ayatollah Ali al-Sistani, raise their weapons as they take part in a parade in the Shiite shrine city of Karbala in central Iraq on October 2, 2014, ahead of joining the fight against jihadists of the Islamic State (IS) group which led a sweeping offensive in June that overran much of the country's Sunni Arab heartland. AFP PHOTO/MOHAMMED SAWAF (Photo credit should read MOHAMMED SAWAF/AFP/Getty Images)
