General Staff: Russia has lost 557,770 troops in Ukraine since Feb. 24, 2022.

Russia's advance toward key eastern highway threatens Ukraine's grip of Donetsk Oblast

Outgunned and outmanned, Ukrainian soldiers struggling to hold the front line in a brutal, months-long Russian siege of Chasiv Yar are increasingly worried about their army's ability to protect their rear.

If key supply lines from the west are cut off and if troops to their south are overrun, they