ALEPPO, SYRIA - DECEMBER 13: Islamic Front members attack Assad regime forces in the northern of Aleppo, Syria on December 13, 2014. (Photo by Salih Mahmud Leyla/Anadolu Agency/Getty Images)
ALEPPO, SYRIA - DECEMBER 13: Islamic Front members attack Assad regime forces in the northern of Aleppo, Syria on December 13, 2014. (Photo by Salih Mahmud Leyla/Anadolu Agency/Getty Images)