SANLIURFA, TURKEY - OCTOBER 11: Turkish army tanks mechanized units take position on top of a hill near Mursitpinar border crossing in the southeastern Turkish town of Suruc in Sanliurfa province October 11, 2014. Kurdish forces have called for more U.S-led airstrikes against Islamic State in Kobani and for Turkey to open its borders to allow military supplies to get through to the Kurdish forces in the besieged Syrian town. (Photo by Gokhan Sahin/Getty Images)
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