N.Korea calls US 'biggest enemy'

North Korean leader Kim Jong Un has called the United States his country's "biggest enemy." He also vowed to advance Pyongyang's nuclear and missile program.

The ruling Workers' Party newspaper, Rodong Sinmun, on Saturday reported a speech by Kim at the party's congress, which opened on Tuesday.

Kim said his country's external political activities should focus on suppressing and subduing the US, which he called "the basic obstacle and the biggest enemy".

His remarks come days before the inauguration of US President-elect Joe Biden later this month.

Kim said there will be no change in Washington's policy against Pyongyang, regardless of who occupies the White House. He said the US must end its hostile stance as a key to future relations between the countries.

This was the first time Kim has referred to his policy toward the US since the presidential election in November that was won by Joe Biden.

Kim affirmed that North Korea will further miniaturize and reduce the weight of its nuclear weapons, develop tactical nuclear arms, and proceed with the production of supersized nuclear warheads on a sustainable basis.

He said his country is progressing toward mounting multiple warheads on ballistic missiles, and the development of a solid-fuelled ICBM. He also referred to the design of a nuclear-powered submarine.