On the issue the world has been most fixated on - North Korea's pursuit of a nuclear arsenal meant to target the entire USA mainland - Trump and Kim signed a joint statement that contained a repeat of past vows to work toward a denuclearized Korean Peninsula.
About the so-called "war games", as President Trump referred to military exercises between the USA and South Korea, Pompeo said the exercises will be suspended only as long as there are ongoing "productive, good-faith negotiations".
Frank Aum, a senior expert on North Korea at the U.S. Institute of Peace, told NPR that "Pompeo is correct that a significant portion of the denuclearization process could technically occur in two-and-a-half years", including the freezing of all nuclear and missile activities and the shutting down of known nuclear facilities.
Kang said South Korea and the United States shared the same goals and approach to achieving denuclearization.
But so far, Mr Trump hasn't shown he'll avoid the same trap he's accused his predecessors of falling into: giving North Korea too much without getting anything in return.
He bristled at questions from reporters about the vague wording of the statement where North Korea "commits to work toward complete denuclearization of the Korean Peninsula" - a promise it has made several times before in the past 25 years and reneged on. They believe that proposing open markets in North Korea is like having a submarine open its hatch for fresh air: the legitimacy of the government, one of the most repressive in modern history, relies on keeping the country hermetically sealed.
Despite Pompeo's insistence that sanctions would hold until denuclearization occurred, he offered few details on how the complex process of complete, verifiable and irreversible denuclearization would be implemented.
Now that's frankly ludicrous.
"All I can say is they want to make a deal", he added.
He said Kim affirmed an "unwavering commitment to complete denuclearization of the Korean Peninsula" in a signed document.
In a series of tweets, Trump sought to take political credit for the summit but risked undermining the USA strategy in the region. For North Korea, the summit alone was a prize to be won - that's why other administrations had held out the prospect of a meeting with a United States president as a reward for the good faith implementation of successive agreements on denuclearization.
Trump declared he and Kim had developed "a very special bond", and Kim said the leaders had "decided to leave the past behind" and promised, "The world will see a major change". But big, joint U.S.
"I'm not for Russian Federation, I'm for the United States", Trump said.
"So far U.S. administrations tended to focus on a narrowly defined military-security deal instead of trying to tackle the root cause of North Korea problem, which is a high level of mutual distrust", he said on Bloomberg Television.
"Apparently, Washington and Pyongyang are moving exactly in this direction", Russian Foreign Minister Sergei Lavrov told reporters in Moscow.
The words of reassurance from Pompeo came as diplomacy continued at an intense pace in the days after Tuesday's summit in Singapore, the first between a sitting American president and North Korea's leader in six decades of hostility. In the run-up to the summit, Japanese Prime Minister Shinzo Abe made a last-minute visit to the White House to secure Trump's support in pushing for the return of Japanese citizens abducted in North Korea.
Donald Trump has dismissed concerns about the widely condemned human rights record of the North Korean dictator, Kim Jong-un, praising him as a "tough guy", a "smart guy" and a "great negotiator".
The exact terms of that agreement remain unclear.
Trump said the world is "safer" following the summit with Kim.
Pompeo also pushed back against reports coming from North Korean official state media, claiming Trump and Kim agreed to a "step-by-step" process, with many interpreting the announcement as the US giving concessions to the regime along the way.