Syria's ceasefire has shown clear signs of progress, the top UN envoy for the war-ravaged country said Thursday, but warned there was no guarantee it would succeed. 


"The situation... on the ground could be summarised as fragile. Success is not guaranteed, but progress has been visible," Staffan de Mistura told reporters in Geneva as the cessation of hostilities entered its sixth day. 


The ceasefire brokered by the United States and Russia came into effect on Saturday but does not include territory controlled by the Islamic State group or Al-Nusra. 


"The level of violence in the country is being greatly reduced. Ask the Syrian people," de Mistura said. 


His comments came shortly before entering a meeting of a UN-backed international task force co-chaired by Moscow and Washington that is overseeing the truce

Source: NNA