Syrian truce deal comes into effect
After a-five-year civil war the first major Syrian truce has come into effect.
The "cessation of hostilities" began at midnight (22:00 GMT Friday) with early reports suggesting that guns had fallen silent over major battlefields, reports BBC News.
UN special envoy for Syria Staffan de Mistura said fighting had "calmed down" but one breach was being investigated.
In the run-up to the deadline US President Barack Obama warned the Syrian government and its ally Russia "the world will be watching".
Russian jets were reported to have intensified attacks on Syrian rebel positions on Friday.
But as the deadline passed monitoring group the Syrian Observatory for Human Rights said while some gunfire was heard in the northern city of Aleppo elsewhere it was quiet.
Mr de Mistura has said that peace talks will resume on 7 March if the truce "largely holds".