Yesterday's barrage in which government airstrikes and bombardment of several opposition-held eastern Damascus suburbs killed at least 45 people, according to the Britain-based Syrian Observatory for Human Rights was particularly heavy. It followed volleys of mortar shells fired into Damascus by rebels in the area that had killed three people, including a child, just hours earlier.
"This is a tragic reminder of the urgency of finding a political solution and security a nationwide ceasefire," he said. "Such indiscriminate attacks are unacceptable and we must do our utmost to protect innocent civilians."
There was no immediate word on casualties from today's attacks, which targeted the southwestern suburb of Daraya.
Around 6.5 million Syrian are internally displaced, O'Brien said. Two million children are out of school, and 72 percent of the population has no access to drinking water, he added.
"This situation is unacceptable. A blot on our collective conscience," he said.
General Valery Gerasimov was quoted by Russian news agencies as saying that Russia is supporting the FSA with airstrikes and is also helping "with weapons, ammunition and material." The statement appeared to suggest Russia was supplying the weapons, but the military could not be reached for clarification.
Last week, President Vladimir Putin said the rebels, who oppose Moscow's ally Syrian President Bashar Assad, were receiving weapons from Russia, but Kremlin spokesman Dmitry Peskov later said Putin meant Assad's army was getting weapons and the rebels were receiving only air support.
