US Secretary of State Mike Pompeo says diplomatic efforts will continue toward the goal of North Korea's denuclearisation, a day after a North Korean official said it no longer wanted to deal with him in talks.
"Nothing has changed. We'll continue to work to negotiate; still in charge of the team," Pompeo told reporters in Washington on Friday.
"President Trump's obviously in charge of the overall effort, but it'll be my team."
He added that US diplomats led by Special Representative for North Korea Stephen Biegun would continue efforts to achieve North Korea's denuclearisation, which he said North Korean leader Kim Jong-un committed to last June.
"I am convinced we will have a real opportunity to achieve that outcome," Pompeo said at a news conference after talks with Japan's foreign and defence ministers.
Pompeo said he believed it was possible to maintain diplomatic engagement with North Korea even without providing the sanctions relief it has been demanding.
"We will continue to press North Korea to abandon all of its weapons of mass destruction, ballistic missiles-related programs and facilities," Pompeo said.
"We will continue to enforce all sanctions on North Korea and encourage every country to do so."
The North Korean foreign ministry official in charge of US affairs said on Thursday that North Korea no longer wanted to deal with Pompeo and he should be replaced in talks by someone more mature.
That statement came hours after North Korea announced its first weapons test since a second summit between Trump and Kim broke down in February.
Experts said the North Korean statement appeared aimed at dividing Trump from senior officials in the hope of exacting concessions, particularly relief from punishing sanctions.
Kim warned last week that the summit breakdown risked reviving tensions and said he was only interested in meeting Trump again if Washington showed more flexibility. He gave a year-end deadline for a change in attitude.
Trump has said he is open to another summit with Kim, but his national security adviser, John Bolton, told Bloomberg News on Wednesday there first needed to be a serious indication from North Korea that it has decided to give up nuclear weapons.
Australian Associated Press