SANLIURFA, TURKEY -  OCTOBER 21:  (TURKEY OUT)  Smoke rises following an air strike by the U.S.-led coalition rises in Kobani, Syria, October 21, 2014 as seen from a hilltop on the outskirts of Suruc, Sanliurfa province, Turkey. Turkey announced that they will allow Iraqi Kurdish forces to cross its territory to reinforce the Syrian Kurdish militia in the besieged city of Kobani.  (Photo by Gokhan Sahin/Getty Images)