North Korean troops have been killed fighting Ukrainian forces in Russia's Kursk border region, the US has said. These would be the first reported casualties since it emerged in October that North Korea had sent around 10,000 troops to reinforce Russia's war effort.

As many as 30 have been “killed or wounded” in Russia’s Kursk region, Ukrainian military intelligence said, among the heaviest losses for North Korean forces yet reported.

Ukraine’s military intelligence agency and the Pentagon say some North Korean troops have been killed during combat against Ukrainian forces in Russia’s Kursk border region