Mr Pompeo was in Seoul on Wednesday to brief South Korean officials on the summit.
"It is hard to evaluate whether Trump and Kim's joint statement is a small step toward" verifiable denuclearization or is, instead, "a sign that the Trump administration will accept other outcomes". -South Korea military exercises, making clear to the North Korean leader that those exercises will resume if Pyongyang negotiates in bad faith.
Trump's claim that North Korea no longer poses a nuclear threat is questionable considering Pyongyang's significant weapons arsenal.
Sceptics of how much the meeting achieved pointed to the North Korean leadership's long-held view that nuclear weapons are a bulwark against what it fears are US plans to overthrow it and unite the Korean peninsula. "I don't know exactly what form that will take, but I'm very confident that by some time in the next week or so we will begin the engagement".
Trump: "Chairman Kim and I just signed a joint statement in which he reaffirms his unwavering commitment to complete denuclearisation of the Korean Peninsula".
That public strategy is leading some analysts to believe Trump might be willing to live with a nuclear armed North Korea just as the USA has learned to live with other nuclear nations, like Pakistan and India. Hannity talks to the President off-camera regularly and Trump makes regular appearances on Fox News programs like "Fox & Friends" and "Justice with Judge Jeanine". The likelihood of Trump launching a first strike against North Korea, thus setting South Korea, where more than 100,000 Americans live and/or work, ablaze and risking a strike against population centers in the US, was similarly low.
"Absolutely. you used the term major, major disarmament, something like that?"
"I don't think it would be the end of the world, because it's the world we already live in", he said.
"It is worrisome, very worrisome, that this joint statement is so imprecise", Schumer added. It did not include an explicit reference to "complete, verifiable, irreversible denuclearization" - something Pompeo had earlier insisted was the minimum condition for a deal.
"I looked at the document and I said, 'Is this for real?'" he said.
North Korea's leader Kim Jong Un and US President Donald Trump after taking part in a signing ceremony at the end of their historic US-North Korea summit, at the Capella Hotel on Sentosa island in Singapore.
Five South Korean women repatriated after causing trouble during Trump-Kim summit
"Just landed", Trump tweeted shortly after touching down at Joint Base Andrews.
"There is no longer a Nuclear Threat from North Korea".
The Facts: He's wrong in suggesting his administration is the first to start on denuclearization with North Korea.
Pompeo said the brief, four-point joint statement that emerged from the summit did not encapsulate all the progress the US and North Korea had made.
Tokyo has reacted with concern at Trump's plans to cancel military exercises with South Korea, saying such drills are vital for East Asian security. The exercises are meant to ensure that South Korean and US troops are ready to respond to sudden North Korean aggression. Jong Un is widely suspected of killing of his half-brother.
Pompeo will meet President Moon Jae-in on Thursday morning to discuss the summit.
Donald Trump left this week's summit with North Korea's Kim Jong-un having granted a huge last-minute concession: promising to stop what he called "war games" with South Korea.
At their historic summit, Kim made few concessions beyond agreeing to "complete denuclearization of the Korean Peninsula" - a term his regime and the US can't agree on a definition for. In return, Trump has promised to stop US military drills in South Korea. Trump's announcement appeared to catch the Pentagon and officials in Seoul off guard, and some South Koreans were alarmed.
Trump added that everybody "can now feel much safer than the day I took office" and people could "sleep well tonight!"
Ordinary North Koreans consistently voice unequivocal support for the leadership when speaking to foreign media.