North Korean leader Kim Jong Un called for bolstering nuclear forces this year during a visit to the country's nuclear material production base and nuclear weapons institute, state media KCNA said on Wednesday.

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.

South Korea 's Yonhap News Agency said North Korea might be using a vertical cold-launch system to fire the missiles. The system, which is commonly associated with submarine- and ship-based weapons, ejects a missile from its container before the missile ignites midair.

Kim Jong Un Vs Trump | Kim Jong Un Nuclear | US News | North Korea News As Donald Trump eyes a potential return to the White House, North Korea's Kim Jong Un is ramping up tensions by showcasing his nuclear arsenal through recent missile tests.