The North's relatively harsh tone contrasts somewhat with what Pompeo said after holding talks with Kim Yong-chol, a close aide to North Korean leader Kim Jong-un, for two straight days from Friday, though he also admitted that there was "more work to be done". "Some places a great deal of progress, other places there's still more work to be done", he continued. Trump later signed a CD with the song on it, asking Pompeo to deliver it to the North Korean dictator.
Following Pompeo's remarks before departing Pyongyang, North Korea's foreign ministry said the talks with Pompeo were "regrettable" and accused the USA of making unilateral demands for denuclearization, The Associated Press reports.
But just as Pompeo's trip to Pyongyang wrapped up, an unnamed spokesperson for the pariah states said that the outcome of the talks was "very concerning" because it has led to a "dangerous phase that might rattle our willingness for denuclearisation that had been firm".
But the result of the negotiations was that "We can't but be very apprehensive", and Pyongyang was "regretful" about the attitude and position presented by the USA side, a North Korean foreign ministry spokesman said in a statement carried by the official KCNA news agency.
"However, the attitude and stance the United States showed in the first high-level meeting [between the countries] was no doubt regrettable", the spokesperson added. "But this expectation and hope of ours were so naive as to be gullible".
It dismissed Trump's unilateral order to suspend joint USA and South Korean war games as a cosmetic and "highly reversible" concession and criticised United States negotiators who "never mentioned" the subject of bringing the 1953 Korean War to a formal end with a peace treaty.
"What the U.S.is requesting is the cancerous demands from previous administrations that blocked all dialogue processes", the statement read, in the kind of overheated rhetoric that the Kim regime and Trump administration share a fondness for. He left saying the talks were "productive".
Nauert said the July 12 meeting, which Pompeo said would take place at the intra-Korean border, would be at working level and involve U.S. Defense Department officials.
Afterwards, Mr Pompeo gave little away about the talks' content, but he said they had discussed at length a timeline for disarmament, including the destruction of a missile engine testing facility.
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North Korea expressed regret Saturday over the attitude of USA negotiators during their talks this week to work out details on how to denuclearize the Korean Peninsula as agreed to by their leaders in their recent summit meeting.
The trip was Mr Pompeo's third to Pyongyang since April and his first since the summit.
President Trump may have declared diplomatic victory immediately after his cordial June meeting with Kim Jong-un.
In an exchange in front of reporters before the meeting, Kim asked Pompeo if he had slept well and the U.S. Secretary said he had.
The top U.S. diplomat has said that Kim had repeatedly expressed in private conversations his desire to give up nuclear weapons for good. "So thinking about those discussions you might have not slept well last night". "President Trump is committed to a brighter future for North Korea".
"However, the attitude and stance the U.S. showed in the first high-level meeting was regrettable", he concluded.
As he departed Pyongyang, Pompeo said he spent "a good deal of time" discussing a denuclearisation timeline and the declaration of North Korea's nuclear and missile facilities.
KCNA said the North also offered to discuss declaring a formal end to the 1950-53 Korean War marking next month's anniversary of the armistice agreement, but the USA side showed little interest, giving "certain conditions and excuses". North Korea committed at last month's summit to the "immediate repatriation" of remains already identified, but that hasn't happened yet.