Ukrainian forces may have to retreat from the Luhansk region to avoid being captured, a Ukrainian official has said, in what would be a major blow to efforts to repel Vladimir Putin's forces.
Russian troops have reportedly advanced in the east, where a focus on the Donbas region has shifted the momentum of the three-month-old war.
A withdrawal could bring bloodthirst Putin close to capturing eastern Ukraine's Luhansk and Donetsk regions and land a significant and symbolic blow onVolodymyr Zelenskyy's hero defenders.
