Syrian regime jets have pounded Eastern Ghouta, sending the death toll from a four-day assault on the rebel enclave on the outskirts of Damascus soaring past 220.
The clash marked a fresh escalation between Washington, which has threatened the regime over its alleged use of chemical weapons, and Damascus, which labelled the latest incident in eastern Syria a "war crime".
"To confront those who really fight international terrorism on the ground in Syria is criminal," he said.
The UN Security Council yesterday failed to back a UN appeal for a month-long humanitarian ceasefire in Syria.
In Eastern Ghouta, which lies east of the capital and has been besieged since 2013, residents had no time to mourn their dead or treat their wounded from the previous day's bombardment.
"From 2011 until now, there has never been the level of bombardment we've seen in the last 96 hours."
The death toll mounted steadily throughout Thursday, with the Syrian Observatory for Human Rights giving 75 civilians dead by the evening. Three died of wounds suffered on Wednesday.
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