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ALEPPO, SYRIA - SEPTEMBER 21 : A view of damaged buildings and vehicles following bomb attacks by Assad regime forces on a market in the opposition controlled al-Shaar neighbourhood of of Aleppo, Syria on September 21, 2015. (Photo by Ibrahim Ebu Leys/Anadolu Agency/Getty Images)

ALEPPO, SYRIA - SEPTEMBER 21 : A view of damaged buildings and vehicles following bomb attacks by Assad regime forces on a market in the opposition controlled al-Shaar neighbourhood of of Aleppo, Syria on September 21, 2015. (Photo by Ibrahim Ebu Leys/Anadolu Agency/Getty Images)