Tens of thousands of Ukrainian soldiers are at risk of being encircled, open-source maps of the battlefield show.

The Ukrainian front in the Russian province of Kursk is at risk of collapsing after days of intensive Russian assaults were aided by a Russian surprise attack through a gas pipeline. Seven months after Ukrainian forces seized roughly 386 square miles of Russian territory,

A Ukrainian-born, pro-Russian military blogger, said Russian special forces walked miles along the inside of a gas pipeline before surprising Ukrainian forces from the rear.