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

White House, addressing concerns at Seoul, says Washington’s demand for North Korea to denuclearize is unchanged after Trump seems to recognize

North Korean leader Kim Jong Un inspected a facility that produces nuclear material and called for bolstering the country's nuclear fighting capability, state media reported Wednesday, as the North looks to increase pressure on the United States following the inauguration of President Donald Trump.