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Syrian boys play in the ruins of a destroyed building in the northern Syrian city of Aleppo on November 18, 2014. Aleppo has been divided between government control in the west, and rebel control in the east since shortly after fighting began in 2012. AFP PHOTO/ BARAA AL-HALABI (Photo credit should read BARAA AL-HALABI/AFP/Getty Images)

Syrian boys play in the ruins of a destroyed building in the northern Syrian city of Aleppo on November 18, 2014. Aleppo has been divided between government control in the west, and rebel control in the east since shortly after fighting began in 2012. AFP PHOTO/ BARAA AL-HALABI        (Photo credit should read BARAA AL-HALABI/AFP/Getty Images)