South Korea’s president has met a visiting Ukraine delegation and called for a joint response to the threat posed by North Korea’s recent dispatch of more than 10,000 soldiers to support Russia’s war against Ukraine.

US officials stress Russia’s sole responsibility for deployment of North Korean troops in its war of aggression with Ukraine

South Korean President Yoon Suk Yeol met a Ukrainian delegation led by Defense Minister Rustem Umerov in Seoul on Nov. 27 to discuss the deepening military ties between Russia and North Korea, the Yonhap news agency reported.

Russia's Deputy Foreign Minister Andrey Rudenko issued a warning to South Korea against supplying lethal aid to Ukraine, saying that the move would "fully destroy relations" between the two countries.

South Koreans remain widely opposed to directly supplying arms to Ukraine, recent polls show, despite renewed international requests from Kyiv and allied capitals after North Korean troops were reported to be helping Russia.

Russia will respond “in every way that we find necessary” if South Korea sends arms to Ukraine, a top Kremlin official said Sunday.

"For the Republic of Korea, these actions pose a serious threat, as North Korean troops are gaining combat experience, which could present additional security challenges in the region in the future," Defense Minister Rustem Umerov said following his visit to South Korea.

South Korea's spy agency says that North Korea has recently supplied additional artillery systems to Russia to support its war efforts against Ukraine.

The U.S., South Korea and others say North Korea has sent more than 10,000 troops to Russia to support its war against Ukraine.

The US, South Korea and others say North Korea has sent more than 10,000 troops to Russia to support its war against Ukraine. What Russia would give North Korea in return has been the focus of keen attention.