SANLIURFA, TURKEY - SEPTEMBER 18: Security forces do not let Syrians who wait at the Turkish-Syrian border to cross into Turkey after fled from the clashes between Islamic State of Iraq and Levant (ISIL) militants and Democratic Union Party (PYD) forces between Tel Abyad and Ayn al-Arab, in Sanliurfa, Turkey on 18 September, 2014. (Photo by Halil Fidan/Anadolu Agency/Getty Images)
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