The UN says large amounts of humanitarian aid have still not entered Syria three days after a nationwide ceasefire came into affect.
Striking footage has emerged of children being pulled from the rubble of a building flattened by air strikes in Syria.
The United Nations says it is talking to Russia about getting a longer halt to hostilities, to help the two million people trapped in the divided Syrian city of Aleppo.
The United Nations is calling for an urgent humanitarian ceasefire to be established in the Syrian city of Aleppo.