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Iraqi Kurdish forces take part in an operation backed by US-led strikes on the outskirts of northern Iraqi town of Sinjar on November 12, 2015, to retake the town from the Islamic State group and cut a key supply line to Syria. The autonomous Kurdish region's security council said up to 7,500 Kurdish fighters would take part in the operation, which aims to retake Sinjar "and establish a significant buffer zone to protect the (town) and its inhabitants from incoming artillery." AFP PHOTO / SAFIN HAMED / AFP / SAFIN HAMED (Photo credit should read SAFIN HAMED/AFP/Getty Images)

Iraqi Kurdish forces take part in an operation backed by US-led strikes on the outskirts of northern Iraqi town of Sinjar on November 12, 2015, to retake the town from the Islamic State group and cut a key supply line to Syria. The autonomous Kurdish region's security council said up to 7,500 Kurdish fighters would take part in the operation, which aims to retake Sinjar "and establish a significant buffer zone to protect the (town) and its inhabitants from incoming artillery." AFP PHOTO / SAFIN HAMED / AFP / SAFIN HAMED        (Photo credit should read SAFIN HAMED/AFP/Getty Images)