Iraqi Shiite volunteers, with the Labayk ya Hussein Brigade (Hussein at your service), take part in a training session in the shrine city of Najaf, in central Iraq, on June 23, 2014 after they volunteered to protect the Shiite holy sites in central and south Iraq in case of an attack by militants led by the Islamic State of Iraq and the Levant (ISIL). Iraq's top Shiite cleric Grand Ayatollah Ali al-Sistani said that Sunni jihadists who have overrun swathes of territory must be expelled from the country before it is too late. AFP PHOTO/HAIDAR HAMDAN (Photo credit should read HAIDAR HAMDANI/AFP/Getty Images)
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AFP HAIDAR HAMDANI