Airstrikes are escalating in Syria's rebel-held northwest, says a war monitor cited by Reuters.
Thirteen strikes were observed in the Idlib and northern Hama provinces on Tuesday, analysts said.
The pace of attacks is unusual and accelerating, according to the analysts.
Syrian state media said insurgents had launched rockets at several towns in Hama province, killing one civilian and injuring seven in violation of the de-escalation accord.
Shelling and aerial strikes...