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Refugees push each other as they wait for tents as Syrians fleeing the northern embattled city of Aleppo wait on February 6, 2016 in Bab al-Salama, near the city of Azaz, northern Syria, near the Turkish border crossing. Thousands of Syrians were braving cold and rain at the Turkish border Saturday after fleeing a Russian-backed regime offensive on Aleppo that threatens a fresh humanitarian disaster in the country's second city. Around 40,000 civilians have fled their homes over the regime offensive, according to the Syrian Observatory for Human Rights monitor. / AFP / BULENT KILIC (Photo credit should read BULENT KILIC/AFP/Getty Images)

Refugees push each other as they wait for tents as Syrians fleeing the northern embattled city of Aleppo wait on February 6, 2016 in Bab al-Salama, near the city of Azaz, northern Syria, near the Turkish border crossing.
Thousands of Syrians were braving cold and rain at the Turkish border Saturday after fleeing a Russian-backed regime offensive on Aleppo that threatens a fresh humanitarian disaster in the country's second city. Around 40,000 civilians have fled their homes over the regime offensive, according to the Syrian Observatory for Human Rights monitor. / AFP / BULENT KILIC        (Photo credit should read BULENT KILIC/AFP/Getty Images)