Refugees fleeing from Mosul head to the self-ruled northern Kurdish region, as they walk past an area in Irbil, 350 kilometers (217 miles) north of Baghdad, Iraq, Thursday, June 12, 2014. The Islamic State of Iraq and the Levant, the al-Qaida breakaway group, on Monday and Tuesday took over much of Mosul in Iraq and then swept into the city of Tikrit further south. An estimated half a million residents fled Mosul, the economically important city. (AP Photo)