Russian and North Korean forces have made significant battlefield advances in recent days in the Kursk region of Russia, threatening Ukraine¡¯s supply lines and its hold on a patch of land it hopes to use as a bargaining chip in future negotiations, according to Ukrainian soldiers, Russian military bloggers and military analysts.

Working together, a new influx of North Korean soldiers and well-trained Russian drone units, advancing under the cover of ferocious artillery fire and aerial bombardment, have been able to overwhelm important Ukrainian positions, Ukrainian soldiers said.

¡°It¡¯s true; we can¡¯t stop them,¡± said Oleksii, commander of a Ukrainian communications unit fighting in the area, when reached by phone. ¡°They just sweep us away, advancing in groups of 50 North Koreans while we have only six men on our positions.