North Korean leader Kim Jong Un called for "indefinitely" strengthening his regime's nuclear weapons capacity, state media reported Wednesday.

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.

North Korean leader Kim Jong Un has inspected a facility that produces nuclear material and called for bolstering the country’s nuclear capability, state media reported Wednesday, as it ramps up pressure on the United States following the inauguration of President Donald Trump.

North Korea's foreign ministry vowed the "toughest counteraction" against the United States as long as Washington "refuses" the country's sovereignty.

North Korea defended its right to maintain a nuclear weapons program at a United Nations disarmament conference held shortly after U.S. President Donald Trump referred to the North as a "nuclear power.

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North Korean leader Kim Jong Un visits the country's nuclear material production base and nuclear weapons institute, at an undisclosed location in North Korea, in this photo released by North Korea's official Korean Central News Agency on January 29,

North Korean leader Kim Jong Un has called for the country's nuclear shield to be strengthened as he visited a nuclear material production facility, state-controlled KCNA news agency reported on Wednesday.