A file photo of Syrian army soldiers driving past the Arch of Triumph in the historic city of Palmyra, in Homs Governorate

A file photo of Syrian army soldiers driving past the Arch of Triumph in the historic city of Palmyra, in Homs Governorate

Syrian army soldiers drive past the Arch of Triumph in the historic city of Palmyra, in Homs Governorate, Syria in this April 1, 2016 file photo. Reuters/Omar Sanadiki

December 11, 2016 7:17 PM (UTC+8)