Ukrainian troops have clashed with North Korean forces for the first time, according to senior Ukrainian officials — a development that would open a “new page of instability in the world,” President Volodymyr Zelensky said.

The upper house of Russian parliament has ratified a treaty with North Korea envisioning mutual military assistance.

Another Kyiv official said Ukraine's army fired artillery at North Korean soldiers in Russia's Kursk border region. The comments were the first official reports that Ukrainian and North Korean forces have engaged in combat, following a deployment that has ...