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KILIS, TURKEY - FEBRUARY 09: A woman is pushed in a wheelchair towards the entrance of the Kilis refugee camp at the closed Turkish border gate on February 9, 2016 in Kilis, Turkey. According to Turkish officials some 35,000 Syrian refugees have massed on the Syrian/Turkish border after fleeing Russian airstrikes and a regime offensive surrounding the city of Aleppo in northern Syria. Turkey's President Recep Tayyip Erdogan said Turkey would open it's doors "if necessary" (Photo by Chris McGrath/Getty Images)

KILIS, TURKEY - FEBRUARY 09: A woman is pushed in a wheelchair towards the entrance of the Kilis refugee camp at the closed Turkish border gate on February 9, 2016 in Kilis, Turkey. According to Turkish officials some 35,000 Syrian refugees have massed on the Syrian/Turkish border after fleeing Russian airstrikes and a regime offensive surrounding the city of Aleppo in northern Syria. Turkey's President Recep Tayyip Erdogan said Turkey would open it's doors "if necessary"  (Photo by Chris McGrath/Getty Images)