North Korean soldiers fighting in Russia's Kursk region against Ukraine have begun resorting to drastic measures to avoid capture, including "finishing off" fellow soldiers and suicide by grenade.

Ukraine has found “irrefutable evidence” of North Korea’s involvement in Russia’s war against his country, president Volodymyr Zelensky said this week as he announced the capture of two North Korean soldiers.

Separately, Ukraine revealed more details about the first two North Korean soldiers it has captured alive and said it was willing to exchange them for Ukrainians held in Russia.