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.
Video footage aired Thursday by North Korean state media showing President Trump returning the salute of a North Korean military general in Singapore has drawn criticism from USA media.
"The world should rest assured the United States, Republic of Korea and Japan remain committed to achieve complete, verifiable and irreversible denuclearization of North Korea", he said.
"President Trump has been incredibly clear about the sequencing of denuclearisation and relief from the sanctions", Pompeo told reporters in Seoul on Thursday.
That may be a lofty goal, given that the USA negotiating teams left their conversations with North Korean counterparts without bridging major differences over how or when denuclearization might actually happen.
Under such conditions, South Korea needs to flexibly change its military pressure in accordance with the Panmunjom Declaration, in which Moon and Kim agreed to build mutual trust after holding the third-ever inter-Korean summit on April 27 at the truce village of Panmunjom.
Kim Jong-un's Flight to Singapore a Precision Maneuver
I couldn't even go home, for 30 days. "I'm just happy to be a part of it", he told reporters at Changi Airport. Rodman said he was oblivious to the horrors of the communist dictatorship when he first visited North Korea.
"We have always sought the settlement of all problems around the Korean Peninsula", Putin said.
"China has reaffirmed its commitment to honouring the United Nations security council resolutions".
"Major disarmament... We're hopeful that we can achieve that in the two and half years", he stated, adding that there is "a lot of work left to do".
However, Kono said the government was not considering such a meeting at the moment and that high-level exchanges must resolve the issue of Japanese abductees held by North Korea.
Moon made the remarks during a National Security Council (NSC) meeting of the presidential Blue House to assess the DPRK-U.S. summit and discuss response measures of the South Korean government.
Tokyo is working on arranging a meeting between the prime minister, Shinzo Abe, and Kim, with one possibility being an Abe visit to Pyongyang around August, the Yomiuri newspaper reported.
Pompeo, speaking in South Korea after the summit, wouldn't budge on the possibility of sanctions coming off in phases, as both Mr. Trump and the North Koreans have suggested.
"I think he loved it", Trump said, referring to Kim. Kim Young Nam heads the presidium of the Supreme People's Assembly in North Korea. The official acknowledged, however, it was still not certain how that was going to happen. "However, the president has not ignored the bad things that have been done by the North Korean regime".