SANA labeled it an "aggression" and a "new massacre".
The U.S. -backed forces retook Raqqa last October.
"Now the rescue workers are searching for my second daughter but can't find her".
De-escalation zones - an agreement between Turkey, Iran and Russian Federation - were touted as way of reducing violence in Syria, but these areas have been subject to some of the most horrific bombing in recent months.
Washington also squarely accuses the Syrian government of responsibility, saying more than 1,400 people, including 426 children, were killed.
"I saw yesterday a man lose his child".
"We are talking to the regional countries and countries outside the region to resolve issues", Rouhani said, underlining that people of the region should themselves decide about their future.
A boy is seen taking pictures after an air raid in the besieged town of Douma in eastern Ghouta in Damascus, Syria, February 6, 2018.
Since the beginning of the year, the increase in violence in Idlib has resulted in another upsurge of internal displacement with over a quarter of a million civilians reportedly fleeing the fighting, according to reports received by the Commission.
Both eastern Ghouta and Idlib province were named as de-escalation zones in a deal brokered in September past year between Russia, Turkey and Iran. In January chlorine is suspected of having been used on two occasions in munitions launched by the regime in the region.
A United Nations report concludes days later that the use of sarin gas had been proved "unequivocally and objectively".
Syrian government warplanes have ratcheted up their bombardment of Eastern Ghouta this week, leaving dozens dead and hundreds in need of medical care.
In July, the Syrian army denied an accusation that more than 30 people were suffocated following a chemical attack in Ain Tarma, east of Damascus.
An Israeli air strike hit the facility in May 2013. "Our air defense systems blocked them and destroyed majority". Around 100 people were wounded, it said.
Using an alternative acronym for IS, the coalition said it then "conducted strikes against attacking forces to repel the act of aggression against partners engaged in the Global Coalition's defeat-Daesh mission".
The new carnage in Syria prompted the United Nations to call for a monthlong ceasefire across the country to deliver aid to more than 2 million people in desperate need.
Abdulkafi Alhamdo, a teacher who survived the siege of Aleppo and fled to Idlib, says government attacks "have made the whole area hell". "If anything, these have been serious escalation areas". They have taken refuge in the north of the province in one of the biggest displacements of the war so far, Moumtzis said.
The situation had grown more dire because of the multiple fronts raging at the same time.
"We were seeing three planes in the air at a time", he said.
The war in Syria has displaced half the population and killed some 400,000 people, but now the carnage is growing in many places at once.