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. These are the first reported casualties since the U.S. and Ukraine announced North Korea has sent 10,000 to 12,000 troops to Russia to help it in the almost 3-year war. The Ukrainian agency said Monday that around 30 North Korean troops were killed or wounded over the weekend during battle in Kursk, where Russia has for four months been trying to quash a Ukrainian incursion. The Pentagon press secretary says some North Korean troops have died in combat but didn't have a specific number of those killed or wounded.