ALEPPO: Missiles rained down on rebel-held areas of Syria’s Aleppo on Friday, causing widespread destruction that overwhelmed rescue teams, as the army prepared a ground offensive to retake the city.

Nearly 30 civilians including several children were killed and dozens wounded in the raids by Russian warplanes and regime aircraft, the Syrian Observatory for Human Rights, a Britain-based monitoring group, said.

The intensity of the bombardment, which included artillery barrages and barrel bombings by helicopters, brought new misery to the estimated 250,000 civilians besieged by the army.

The escalation came after US Secretary of State John Kerry failed to reach an agreement with Russian counterpart Sergei Lavrov on terms to salvage a failed cease-fire.

Asked by reporters at the United Nations whether the truce could be reinstated, Lavrov simply said: “You should ask the Americans.”