Intense air and missile strikes on a school district and other areas in insurgent-held Damascus suburbs killed dozens of people on Sunday, including children, a monitoring group and local rescue workers said.
The Syrian Observatory for Human Rights said unidentified war planes hit the town of Douma, 10 miles (15 km) northeast of the capital, and surface-to-surface missiles fired by the Syrian army also hit the surrounding areas, including Eastern Ghouta.
The strikes killed at least two children and a school principal, it said.
Syrian Civil Defence, a humanitarian rescue group that operates in rebel-held areas, put the death toll at 35 and said many others were wounded. It posted a photo of a dead baby with a severe wound to its head.