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UK-based monitoring group estimates 200-250,000 people cut off from food and fuel supplies

Regime bombing has cut off a vital supply route into the east of Aleppo

Current nationwide ceasefire ends on Thursday, but fighting continues in the city

CNN  — 

Tens of thousands of civilians face an increasingly dire situation in the besieged Syrian city of Aleppo after a major supply artery was cut off by regime bombing.

The rebel-held Castello