SEOUL (Reuters) -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,

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 said that US deployments of nuclear strategic assets, war games, and military cooperation with Japan and South Korea were creating a regional military imbalance and posing a serious threat to the security environment,

North Korean leader Kim Jong Un said an elevated US security partnership with South Korea and Japan poses a grave threat to his country and vowed to further bolster his nuclear weapons programme, state media reported.

The first tour is set to take place Feb. 12 to 18, when major celebrations are planned for the birthday of the country's late leader Kim Jong Il, one of North Korea's biggest holidays.

The dictator, eager to shut out the influence of Hollywood and K-pop, has been exalting a “shock brigade” of 300,000 teens and 20-somethings drafted into flood reconstruction.

Trump predicted that he "will have relations" with North Korea, calling the time he spent with Kim during his first term an “asset."