Ukrainian troops are facing down a ferocious Russian counteroffensive in Kursk as Putin seeks to take back Russian land before any talks.

Experts tell Andy Gregory and Tom Watling that the real question is how much Kyiv’s troops are able to inflict casualties on the Russians as the price for taking the territory back

The U.S. says there will be a "firm response" as Ukrainian forces holding ground in Russia's Kursk region now face North Korean troops "engaging in combat."