Mr Pompeo said the secretive state was "contemplating a strategic shift" - and that talks to prepare a meeting about denuclearisation were going well. The U.S.is willing to provide the North Koreans security guarantees and help them achieve economic prosperity if they denuclearize, said the official, who briefed reporters on condition of anonymity. "As we move to adjust to the political situation in the face of USA hegemonism, I am willing to exchange detailed and in-depth opinions with your leadership and hope to do so moving forward", Kim told Sergey Lavrov.
A meeting with Trump would be a huge win for Kim, and insiders say the USA and North Korea aren't close to reaching a deal that would make it worth the US's time.
"Our secretary of state is having very good meetings".
His emergence as the face of North Korea's diplomacy with Washington suggests he has unusual influence in a country that revolves nearly exclusively around leader Kim Jong Un.
Pompeo said it was unclear whether the meeting would actually take place on June 12, but said that "real progress" has been made in meetings with North Korean officials this week.
The talks come as preparations for the highly anticipated summit in Singapore were barreling forward on both sides of the Pacific Ocean, despite lingering uncertainty about whether it will really occur, and when.
The North Korean visit to the White House would be the first there by a high-level Pyongyang official since 2000 when senior figure Jo Myong-rok met President Bill Clinton. North Korea's conciliatory response to that letter appears to have put the summit back on track. It's the highest-level meeting between a USA president and a North Korean official since 2000.
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The usually secretive Kim Jong-un has given a glimpse behind North Korea's political veil by allowing news cameras inside the nation's parliamentary building during his historic meeting with Russian Foreign Minister Sergei Lavrov.
The United States and South Korea blacklisted the official for supporting North Korea's nuclear and missile programs in 2010 and 2016, respectively.
The two also clinked glasses full of whiskey, as a photo shared on Pompeo's official Twitter account showed, which Kim Yong Chol no doubt appreciated as he has been described as a "heavy drinker" by one of the South Korean musicians who performed in Pyongyang in April. "Hopefully we will have a meeting on the (June) 12th", he said.
That "stage-by-stage" process involving packages of reciprocal concessions, had been explicitly ruled out by the Trump administration, which has insisted on "complete, verifiable, irreversible disarmament" of the North Korean nuclear weapons programme.
Pompeo tweeted a photo Wednesday night showing him shaking hands with Kim Yong Chol and another showing the men seated at a table in an apartment near United Nations headquarters in NY.
US President Donald Trump is prepared to walk away from peace talks with North Korea at any time, a former military leader has warned, insisting that a peaceful solution to the North Korea nuclear issue is not certain.
With respect to US-North Korea summit Mike Pompeo has said there is still a lot of work left to do.
Ahead of the meeting, Mr Pompeo had set out the U.S. position.
An advance team, led by Deputy Chief of Staff Joe Hagin, met with the North Korean team in Singapore on Wednesday, and expect to meet again on Thursday, according to the White House.