When asked if human rights would be on the agenda at the summit, for example, Pompeo said: "America's interest here is preventing the risk that North Korea will launch a nuclear weapon into LA or Denver".
South Korea's president has welcomed North Korea's decision to dismantle its nuclear test site, calling it a start to its nuclear disarmament.
It announced the upcoming dismantlement of the Punggye-ri nuclear research facility, which hosted all six of the country's underground nuclear tests.
In a separate interview with Chris Wallace of "Fox News Sunday", Pompeo said American private investment in the North would help North Korean people "eat meat and have healthy lives", so long as the regime delivers complete, verifiable, irreversible denuclearization. He has consistently stated a policy of denuclearization for North Korea, and in order to achieve that goal, there must be communication.
Pompeo cast US President Donald Trump's June 12 summit with Kim Jong Un as a test of the North Korean leader's commitment to change his country's direction.
Pompeo told "Face the Nation" that his most recent trip to North Korea was created to lay the groundwork for President Trump's upcoming summit with Kim.
Trump a year ago pressured the United Nations Security Council to cut off most of North Korea's exports and curb fuel imports to stop Kim from pursuing the capability to strike the U.S. with a nuclear weapon. However, both the S&P 500 and FTSE 100 failed to respond when North Korea announced its plan to abandon its nuclear weapons programme, suggesting that these indices may be more likely to react to a negative outcome from the summit than a positive one. The meeting was set up to prepare for Kim's talks with Trump.
Last November, according to CNBC, North Korea unveiled its largest and most powerful rocket, the Hwasong-15 or KN-22, in its third intercontinental ballistic missile test.
And in the event Trump can secure the "complete, verifiable, irreversible denuclearization of North Korea", Pompeo said USA investment could be possible, with "private sector Americans coming in" to the North to improve its energy, infrastructure, and agriculture sectors.
Pertinently, North Korea believes it can at least rely on China as a buffer against potential U.S. aggression; Iran does not have a similar faith in Europe. Following the visit, North Korea released three American citizens.
However, White House press secretary Sarah Sanders said she did not believe that Moon would be a part of the historic summit in Singapore the following month.
"They obviously want to make concessions, a lot of concessions, but not as much as the American side hopes for", said Professor Andrei Lankov, a North Korea economic analyst with Kookmin University in Seoul.
The US will have to assure North Korea it won't seek to undermine its leader Kim Jong-un, Secretary of State Mike Pompeo has implied.
If one thinks back about two months ago, Kim and his entourage rode in a luxury train to Peking for a weekend.