Pompeo said the Trump administration hoped North Korea would continue to keep its commitment towards denuclearization and not test long-range missiles.

"President Kim has personally made a commitment to denuclearize, so there will be no long-range missile launches and nuclear tests," US Secretary of State Mike Pompeo told a joint news conference with his Russian counterpart. Sergei Lavrov was in Washington on 10 December when asked if the US expected North Korea to return to more drastic actions.

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US Secretary of State Mike Pompeo speaks at a joint news conference with Russian Foreign Minister Sergei Lavrov in Washington, December 10 Photo: Reuters.

Pompeo also said Washington is seeking to build negotiating mechanisms to talk with Pyongyang on the way forward. "We strongly hope that North Korea will continue to comply with all those commitments," the US Secretary of State added.

North Korean leader Kim Jong-un has set a deadline for the United States to give more flexibility in denuclearization talks or Pyongyang will "take a new path".

Experts say that if the United States fails to meet this deadline, North Korea may restart its suspended intercontinental ballistic missile (ICBM) trials from 2017 and bring bilateral relations back to phase. tension before last year's summit.

The recent Pyongyang has exacerbated the situation on the Korean peninsula with a series of short-range weapons tests as well as launched attacks on President Trump.

North Korean official Kim Yong-chol on December 9 called Trump an "impatient old man". The announcement came a day after Pyongyang announced it had just conducted a "very important" test.

Trump had previously called Kim Jong-un a "rocket man" at a meeting with NATO leaders and implicitly warned the US that it could use force in case of need. North Korean officials have said that Kim Jong-un was "dissatisfied" with the US president's comments and warned the country would respond accordingly if Washington took military measures.

North Korea's ambassador to the United Nations Kim Song said on Monday that Pyongyang no longer has nuclear talks with Washington, criticizing the Trump administration trying to "buy time" to match its domestic agenda, reiterating only Trump's re-election campaign.