Syrian and Russian warplanes pounded rebel-held east Aleppo today ahead of a UN Security Council meeting to discuss the worst surge in violence to hit the devastated city in years. Overnight, residents and a monitor reported heavy air raids on the besieged east of the city, which Syria's army has pledged to retake. <br/><br/>The UN Security Council is due to meet later today in an emergency session to discuss the escalating violence, which UN Chief Ban Ki-moon described as chilling.<br/><br/>Washington and its European allies meanwhile said the burden is on regime ally Moscow to save a truce that fell apart in the past week.<br/><br/>The Syrian Observatory for Human Rights said, at least 101 people, mostly civilians, have been killed in Syrian and Russian bombardment of eastern Aleppo since the army announced an operation to take it on Thursday.