The president had previously mocked Chairman Kim during public appearances and regularly referred to him as "little rocket man" and said he was on a "suicide mission".
The report was interpreted as meaning the U.S. would grant rewards - such as sanctionsrelief - to North Korea as North Korea take steps to denuclearize, a process which the United States had adamantly opposed.
The Korean Peninsula remains technically at war, because the 1950-53 conflict ended in an armistice, not a peace treaty.
North and South Korea held military talks for the first time in more than a decade on Thursday, as two-star generals from both sides met just two days after U.S. President Donald Trump floated his plan to halt joint exercises with South Korea.
Pompeo said the USA would work with its allies, namely South Korea and Japan, to implement the process as "quick and as complete" as possible.
JW: Trump before the meeting said, "They have to de-nuke", and Secretary of State Mike Pompeo adds that it has to be "complete, verifiable and irreversible".
Christopher Hill, the United States representative between 2005 and 2007 to the six-party talks - which failed to find a way to remove the North Korean nuclear threat - said that the current diplomatic efforts to resolve the North Korea problem could be the last.
Putin added that Russian Federation is ready to "make all necessary efforts to establish ties, including in economic cooperation" with North Korea.
Pompeo said that the USA wants verifiable action by North Korea to denuclearize by January 2021.
After the summit, President Trump surprised allies in the region by calling the joint military exercises with South Korea "provocative" and saying they will no longer be held, as long as North Korea continues to make progress toward denuclearization.
"It will be treated as a military victory by the North Koreans."
He said Pyongyang was committed to giving up its nuclear programme.
But details on what form those promises would take were sparse, with critics noting the lack of a timeline for when North Korea will begin dismantling its nuclear programme. -South Korea-Japan trilateral meeting, but she reaffirmed that the U.S. I saw one estimate that, when you factor in all the things that we use to deter North Korea or to prepare for fighting North Korea, it might be $40 billion a year.
The footage also showed a smiling Mr Kim strolling through the streets of Singapore with Vivian Balakrishnan, the country's minister for foreign affairs, as cameras flashed and dozens of people raised their smartphones to take photos. Thirty-five percent say the North Koreans got most or all of what they wanted, and 32 percent say they got only some or nothing.
President Trump nominated for Nobel Peace Prize
The US leader was nominated by two members of Norway's governing Progress Party , according to state broadcaster NRK . Amundsen nominated Trump along with his fellow Progress Party colleague Christian Tybring-Gjedde.