(VOVworld) - Syrian rebels in besieged east Aleppo have agreed to a UN plan for aid delivery and medical evacuations, but the United Nations is awaiting a green light from Russia and the Syrian government.

UN humanitarian adviser Jan Egeland spoke about the humanitarian missions of an international group to support Syria on October 20 (Photo: EPA/ VNA)

With freezing winter conditions setting in, about 275,000 people are trapped in east Aleppo, where the last UN food rations were distributed on November 13. UN humanitarian adviser Jan Egeland said on Thursday that hundreds of trucks are ready in Turkey and government-controlled west Aleppo to bring food and medicines to the eastern sector, but the United Nations needs 72 hours once it has all approvals to prepare a "big, complex and dangerous operation. Egeland hoped the plan, which includes rotation of the 30 doctors still in eastern Aleppo, can be carried out "in the next few days".