Trump, meanwhile, said Monday that he planned to meet Kim next month or in early June and hoped the discussions would ultimately lead to an end of the North's nuclear weapons program.
USA media reported that U.S. and North Korean intelligence officials have spoken several times with a focus on nailing down a location for the summit. Also, no missile testing by North Korea during this period of time.
"And as I said, the North Korea and South Korea situation, which complicates it - the deal that we have with South Korea, I think, is going to be - I think it's going to be a very fair deal".
Until now, the USA had relied mostly on ally South Korea's assurance of Mr. Kim's intentions.
Trump has said that Kim is suddenly interested in talking with the outside world because of his "maximum pressure" campaign against the North Korean leader.
North Korean leader Kim Jong-un speaks during an unofficial visit to Beijing in this undated photo released by North Korea's Korean Central News Agency (KCNA) in Pyongyang March 28, 2018.More news: Boeing bags $12.3bn American Airlines deal for 47 Dreamliners
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The Rodong Sinmun, the official organ of the ruling Workers' Party, filled its front page with KCNA's report, along with pictures of Kim chairing the Politburo meeting.
"Kim Jong Un has been shifting from the military-dominated emergency system to a normal party-dominant system", said Professor Yang Moo-jin at the University of North Korean Studies.
"Kim Jong Un made a decision to go to the negotiating table because he judged that once he became a nuclear power", he said, "the US would be much more interested in talking to him". They 've said. We've said.
The two countries have been holding secret meetings to prepare for the summit, trying to work out the logistics of time and meeting place. Prior to that, Washington had relied mostly on South Korea's assurances of Kim's intentions.
No specifics have yet emerged concerning the date or venue of the proposed summit, with a third country such as Mongolia or Sweden under consideration to host the talks, according to multiple reports.