Seoul: North Korean leader Kim Jong-un has vowed to advance the nuclear arsenal of his country, terming the United States the "biggest enemy" of his country.

 Korean Central News Agency (KCNA) reported Kim on Friday saying, "Washington's policy against Pyongyang won't change regardless of who is in the White House, adding that an end to its hostile stance will be the key to future relations between the two countries."

The North Korean leader also ordered officials to develop missiles with multiple warheads, underwater-launched nuclear missiles, spy satellites and nuclear-powered submarines. Kim on Friday made the first reference to the transition of power in Washington since Biden's election as US president in November.

According to KCNA, he further added, "Our external political activities going forward should be focused on suppressing and subduing the US, the basic obstacle, the biggest enemy against our revolutionary development."

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