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ALEPPO, SYRIA - OCTOBER 06: Smoke rises after Russian airtrikes hit ammunition-stores and bases of two opposition groups, in Mansoura region in the west of Aleppo, Syria on October 06, 2015. (Photo by Abdulfetah Huseyin/Anadolu Agency/Getty Images)

ALEPPO, SYRIA - OCTOBER 06:  Smoke rises after Russian airtrikes hit  ammunition-stores and bases of two opposition groups, in Mansoura region in the west of Aleppo, Syria on October 06, 2015. (Photo by Abdulfetah Huseyin/Anadolu Agency/Getty Images)