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Syrians walk amid destroyed buildings as residents return to Aleppo's formerly rebel-held al-Shaar neighbourhood on January 21, 2017, a month after government forces retook the northern Syrian city from rebel fighters. / AFP / LOUAI BESHARA (Photo credit should read LOUAI BESHARA/AFP/Getty Images)

Syrians walk amid destroyed buildings as residents return to Aleppo's formerly rebel-held al-Shaar neighbourhood on January 21, 2017, a month after government forces retook the northern Syrian city from rebel fighters. / AFP / LOUAI BESHARA        (Photo credit should read LOUAI BESHARA/AFP/Getty Images)