North Korean leader Kim Jong Un has said an elevated U.S. security partnership with South Korea and Japan poses a grave threat to his country and vowed to further bolster his nuclear weapons program.

Kim Jong Un condemns US, Japan and South Korea military ties and vows nuclear countermeasures - Kim condemned the deployment of US nuclear assets and joint military exercises in the region

North Korean leader Kim Jong Un speaks during the groundbreaking ceremony for the Kangdong County Hospital and General Service Center in Kangdong County, North Korea, February 6, 2025, in this photo released by North Korea's official Korean Central News Agency.

North Korean leader Kim Jong Un criticised trilateral military cooperation among the United States, Japan and South Korea for raising tensions in the region and vowed countermeasures, including the further development of nuclear forces.