Heavy clashes erupted between regime and rebel forces in Syria's divided city of Aleppo after a "humanitarian" ceasefire announced by government ally Russia expired before the UN could evacuate wounded civilians from rebel-held areas.
Moscow had extended the unilateral "humanitarian pause" into a third day until 1600 GMT Saturday but announced no further renewal, as fierce fighting broke in several areas along the front line dividing the city, the Syrian Observatory for Human Rights reported.