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TOPSHOT - Syrian pro-government forces rest by a fire as they advance in the Jisr al-Haj neighbourhood during the ongoing military operation to retake remaining rebel-held areas in the northern embattled city of Aleppo on December 14, 2016. Shelling and air strikes sent terrified residents running through the streets of Aleppo as a deal to evacuate rebel districts of the city was in danger of falling apart. / AFP / George OURFALIAN (Photo credit should read GEORGE OURFALIAN/AFP/Getty Images)

TOPSHOT - Syrian pro-government forces rest by a fire as they advance in the Jisr al-Haj neighbourhood during the ongoing military operation to retake remaining rebel-held areas in the northern embattled city of Aleppo on December 14, 2016. 
Shelling and air strikes sent terrified residents running through the streets of Aleppo as a deal to evacuate rebel districts of the city was in danger of falling apart.

 / AFP / George OURFALIAN        (Photo credit should read GEORGE OURFALIAN/AFP/Getty Images)