North Korea is close to giving up on discussions with the US, a senior Pyongyang official announced on Friday, and may resume testing of its nuclear weapons and long-range missiles.

In a hastily arranged press conference, Choe Son-hui, the deputy foreign minister, expressed disappointment at the failure of the recent summit in Hanoi between Kim Jong-un, the North Korean leader, and US President Donald Trump.

“We have no intention to yield to the US demands in any form, nor are we willing to engage in negotiations of this kind”, Mrs Choe was quoted as saying by Russia’s TASS news agency. She added that the US had missed “a golden opportunity” in Vietnam to solve their differences.

Mrs Choe added that Pyongyang had been “deeply disappointed” at the failure of the two leaders to reach agreement in Hanoi last month and called on Washington to drop its demands for full denuclearisation of the North before sanctions are lifted.

She added that North Korea will not cede any ground in the stand-off.

Mrs Choe added that Mr Kim will make a decision soon on whether to continue to exercise restraint in the testing of nuclear warheads and intercontinental ballistic missiles.