Syria's government on Tuesday said it would not agree to a ceasefire in Aleppo unless it guarantees a full withdrawal of rebel factions from the city. 

"Syria will not leave its citizens in east Aleppo to be held hostage by terrorists, and will exert every effort to liberate them," said a foreign ministry statement carried by state news agency SANA.

"It therefore rejects any attempt by any side to reach a ceasefire in east Aleppo that would not include the exit of all terrorists."