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Destroyed buildings are seen in the Homs neighbourhood of Khaldiyeh, formerly held by rebel fighters and captured by Syrian government forces in summer 2013, on June 3, 2014. Syrian rebels evacuated Homs in May in a deal that handed the Old City back to the government, granting it a symbolic victory. The pullout leaves the rebels confined to a single district on the outskirts of Homs, Syria's third city and once dubbed "the capital of the revolution" against President Bashar al-Assad. AFP PHOTO/JOSEPH EID (Photo credit should read JOSEPH EID/AFP/Getty Images)

Destroyed buildings are seen in the Homs neighbourhood of Khaldiyeh, formerly held by rebel fighters and captured by Syrian government forces in summer 2013, on June 3, 2014. Syrian rebels evacuated Homs in May in a deal that handed the Old City back to the government, granting it a symbolic victory. The pullout leaves the rebels confined to a single district on the outskirts of Homs, Syria's third city and once dubbed "the capital of the revolution" against President Bashar al-Assad.  AFP PHOTO/JOSEPH EID        (Photo credit should read JOSEPH EID/AFP/Getty Images)