Regions of Syria covered by a UN-brokered ceasefire Sunday enjoyed the "calmest day" since the truce started, a monitor said, as Moscow and Washington cautioned against any delay in resuming peace talks.
"Sunday was the calmest day since the ceasefire came into effect" on February 27, Rami Abdel Rahman, head of the Britain-based Syrian Observatory for Human Rights, told AFP.
He said the exceptions were dozens of rockets fired by Al-Nusra Front, a jihadist group excluded from the truce, and other rebel factions at Kurdish forces in the far north of the city of Aleppo.
The violence killed three people, according to both the Observatory and the Kurds.