A picture taken from a rebel-held area shows smoke billowing from buidings in the pro-regime Shiite town of Fuaa, in northwestern Idlib province, on December 6, 2016 following a reported rebel shelling. Syria's government said it would not agree to a ceasefire in Aleppo unless it guarantees a full withdrawal of rebel factions from the city. / AFP / Omar haj kadour (Photo credit should read OMAR HAJ KADOUR/AFP/Getty Images)