During Pompeo's recent trip, meant to negotiate the details of the nuclear agreement signed during the Trump-Kim summit in Singapore, North Korea called denuclearization demands by the US "gangster-like".
Pompeo's third trip to North Korea, which he has visited more than any other country during his tenure as secretary, was supposed to turn these promises into actual results. He left with a harsh reminder that the North Korean leader expects something in return.
Before events in Pyongyang had concluded, Nauert told reporters that Pompeo had been "very firm" in insisting that North Korea fulfills its commitment to "complete denuclearisation".
North Korea also accused the United States of trivializing the significance of suspending military exercises with South Korea.
"These are complicated issues but we made progress on nearly all of the central issues", he told reporters on Saturday on the airport tarmac before leaving Pyongyang, following his third visit to North Korea. The holdup, I would imagine, is that North Korea wants the United States to pay the expenses for the excavation of the remains, which, in reality, have been ready to be sent for many years.
The ministry added: "We had expected that the USA side would offer constructive measures that would help build trust based on the spirit of the leaders' summit. we were also thinking about providing reciprocal measures".
The pair provided few details on their lives in North Korea, although Kim Byeong-uk said his work in the civil service was as a provincial official in the far northeast of the country.
Pompeo characterized the talks as progressive, asserting that North Korea did not "push back" on denuclearization.
But while Pompeo on Saturday painted a positive picture of the follow-up talks, North Korean officials accused the U.S. of trying to unilaterally pressure their country into abandoning its nuclear programme. Roy Blunt said Sunday in an interview on NBC's "Meet the Press".
After meeting with his Japanese and South Korean counterparts in Tokyo, Pompeo said his two days of talks in Pyongyang had been productive and conducted in good faith.
North Korean Air Force One, also known as Chammae-1, is a modified Soviet jetliner Ilyushin II-62M aircraft.
Practically, assuaging Kim's security fears could require risky choices for the United States and its North Asian allies, such as rolling back America's nuclear umbrella or pulling back its troops in South Korea.
"These are complicated issues, but we made progress on nearly all of the central issues", said Pompeo.
Frank Gaffney, who oversees the Center for Security Policy, says he is among those hoping that President Donald Trump succeeds in this effort. "We had detailed and substantive discussions about the next steps towards a fully verified and complete denuclearization".