Deadly air strikes hit the Syrian rebel enclave of Eastern Ghouta for a seventh straight day on Saturday after the United Nations again delayed a vote on a ceasefire, raising the number of civilian casualties to nearly 500 dead, 121 of them children. The Syrian Observatory for Human Rights said at least 21 civilians were killed in fresh strikes, including 12 in the main town of Douma. It has said the strikes are being carried out by Syrian and Russian forces. The regime launched a devastating bombardment of the enclave just outside the capital last Sunday that has now killed around 500 civilians, according to the Observatory The UN Security Council had been due to hold a vote on Friday on a resolution, sponsored by Sweden and Kuwait, calling for a month-long ceasefire to allow aid deliveries and the evacuation of seriously wounded civilians. But the vote was postponed until 1700 GMT on Saturday as Western powers bickered with Russia over the wording after Moscow proposed several amendments. Rescuers in eastern Ghouta said the bombing would not let up long enough for them to count the bodies. Residents holed up in basements and medical charities decried attacks on a dozen hospitals. First responders rushed to search for survivors after strikes on Kafr Batna, Douma and Harasta, the Civil Defence in eastern Ghouta said. The rescue service, which operates in rebel territory, said it had documented at least 350 deaths in four days earlier this week. "Maybe there are many more," said Siraj Mahmoud, a civil defense spokesman in the suburbs. "We werent able to count the martyrs yesterday or the day before because the warplanes are touring the skies."