North Korean officials have previously said whether North Korea lifts its moratorium on long-range missile and nuclear tests depends on what actions the USA takes.
United Nations diplomats fear that North Korea will resume long-range nuclear or ballistic tests if no progress is made soon.
In a reference to President Trump's 2020 re-election bid, Ambassador Kim Song said the "sustained and substantial dialogue" sought by the USA was a "time-saving trick" to suit the nation's domestic political agenda.
Trump and Kim have had two summits, but have been unable to strike a comprehensive agreement in which North Korea agrees to give up its nuclear weapons.
North Korea said Saturday denuclearization talks with the United States were 'out of the negotiation table.
North Korean leader Kim Jong Un visits a multiple rocket launcher site at an undisclosed location.
North Korean ambassador to the United Nations Kim Song speaks during a news conference in NY, U.S., October 7, 2019.
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At a press conference he said: 'As you all know, we have a very good and constructive relationship between me and the President'. At another point in the video, Trudeau is heard saying about the Trump meeting, "His team's jaws drop to the floor".
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I was joking that I need a cleanse but I should shove some salt water up my nose or something and try rinse myself out. I've got that cough like you've got something in your lungs, phlegm in your lungs or whatever, but it's not fun.
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"I wish the president would apologize , obviously, for the things that he's done that's wrong but I do regret having said that". Trump, 73, responded on Twitter with a familiar Republican criticism that the move to impeach him wasn't warranted.
Saturday's statement comes as North Korea inches closer to its self-imposed end-of-year deadline for nuclear negotiations with the Trump administration and just days after a North Korean official ominously warned of a "Christmas gift" to the US. Pyongyang said any repeat of such language would represent "the relapse of the dotage of a dotard".
The statement from North Korea's ambassador to the UN, Kim Song came after Belgium, Estonia, France, Germany, Poland and the United Kingdom on Wednesday condemned North Korea's 'continued testing of ballistic missiles, ' and called for strict enforcement of sanctions against Pyongyang.
In spite of Trump's reprise of the Rocket Man meme, he has still expressed hope that Kim Jong Un would denuclearize.
CNN is reaching out to the State Department, the White House and the National Security Council for comment.
North Korean leader Kim Jong Un had agreed to shutter the Sohae site during a summit past year with South Korean President Moon Jae-in in Pyongyang as part of trust-building measures.
But many foreign experts doubt whether North Korea would completely abandon a nuclear program that it has built after decades of struggle and sees as essential to its survival. "It is possible this is what Kim Song means, since we haven't heard anything quite so stark from those involved in the negotiations".