Russian warplanes pounded an Al-Qaeda-held city in northwesternbefore dawn on Tuesday killing 23 civilians in the heaviest strikes in months, a monitoring group said.
Dozens of civilians were also wounded in the raids on Idlib, a provincial capital held byaffiliate and its allies since March last year, the Syrian Observatory for Human Rights said.
Al-Nusra is not party to a Russian-and US-brokered ceasefire that went into force on February 27 between Moscow-backed government forces and Washington-backed non-jihadist rebels.
“The air strikes are the most intensive on Idlib since the beginning of the truce,” Observatory chief Rami Abdel Rahman told.
“Even though Idlib is not covered by the truce, it had been relatively calm with only intermittent raids,” he added.
The strikes hit near a hospital and a public garden.
Moscow has been carrying out an air campaign in support of itsally since September last year.