Syria regime airstrikes kill dozens in Eastern Ghouta
In apparent retaliation, rockets and mortars rained down on government-controlled districts of Damascus, Syria's state news agency SANA reported.
One woman was killed and four people were wounded in mortar fire on the Bab Touma neighbourhood and the capital's Mariamite Cathedral, a Greek Orthodox church, a police source told the agency.
Another person was killed and nine people wounded in rocket fire on the regime-held part of Harasta district.
The barrage of bombardment came as the United Nations children's agency warned of the dire risks to children in the Middle East's war zones.
At least 83 children were killed in conflicts across the region in January - including 59 in Syria alone.
And four Syrian children were among at least 16 refugees who froze to death in a snowstorm as they tried to flee to neighbouring Lebanon.