SEOUL- U.S. Secretary of State Antony Blinken, along with his South Korean and Japanese counterparts, has conveyed their "serious concern" regarding discussions of military cooperation between Russia and North Korea, which reportedly includes the possibility of arms trade, as announced by South Korea's Foreign Ministry on Saturday.

In a concise meeting held on Friday, Blinken, South Korea's Foreign Minister Park Jin, and Japan's Foreign Minister Yoko Kamikawa committed to taking decisive actions against any activities that jeopardize regional security and breach U.N. Security Council resolutions, according to an official statement by the ministry.

This concern arises after North Korea's leader, Kim Jong Un, concluded a weeklong visit to Russia last week, during which military cooperation discussions with Russian President Vladimir Putin took place.

U.S. and South Korean officials have expressed apprehension that this summit could potentially facilitate Russia in acquiring ammunition from North Korea to bolster its depleting supplies for the ongoing conflict in Ukraine.

South Korean President Yoon Suk Yeol emphasized on Wednesday that if Russia were to assist North Korea in enhancing its weaponry in exchange for support in Ukraine, such a move would be deemed "a direct provocation." Seoul and its allies are resolute in not remaining passive in the face of such a situation.