Trump's June nuclear summit with Kim yielded no specifics on how North Korea would achieve denuclearization.
Pompeo is set to leave for Pyongyang on Thursday to meet with North Korean leader Kim Jong-un and discuss follow-up measures on an agreement signed by Kim and US President Donald Trump at their historic summit last month.
Sung Kim, an ambassador to South Korea between 2011 and 2014 and a nuclear negotiator with the North during previous talks, has taken on a key role in dialogue with Pyongyang in recent months. "All of Asia is thrilled", he said in a tweet. Complains only opposition party that includes fake news.
He would spend the next two days in Tokyo where he will meet Japanese and South Korean leaders to discuss their shared commitment to the final, fully verified denuclearisation of North Korea, as well as other bilateral and regional issues, state department spokesperson Heather Nauert said.
"We had good meetings yesterday and. the secretary of state will be there later this week to continue those discussions", she said.
White House national security adviser John Bolton said on Sunday he believed the bulk of North Korea's weapons programs could be dismantled within a year, although some experts say the complete process could take far longer.
Pompeo last visited Pyongyang in May ahead of the Trump-Kim summit and traveled there secretly in early April while he was director of the Central Intelligence Agency.
White House spokeswoman Sarah Sanders refused to confirm or deny reports that Kim's regime has stepped up its nuclear program since the Trump summit, rather than beginning to disarm. US officials say they are clear-eyed about the North's past behavior in negotiations. "If not for me, we would now be at War with North Korea!"
The U.S. State Department said here Tuesday it will not provide a timeline for the abandonment of nuclear and missile program of the Democratic People's Republic of Korea (DPRK).
Evidence newly obtained by US officials points to preparations to deceive the United States about the number of nuclear warheads in North Korea's arsenal as well as the existence of undisclosed facilities used to make fissile material for nuclear bombs, officials told The Post.
In August 2017, Trump promised "fire and fury like the world has never seen" if North Korea continued to threaten the USA.
The factory in question produces wound-filament airframes and nozzles for engines used in solid-fuel missiles, particularly the Pukguksong series of rockets, the report said.
"If they have the strategic decision already made to do that and they're cooperative, we can move very quickly", he said.