American and North Korean officials have spoken several times and have met in a third country to settle on the summit's location, administration officials say - with Kim pushing for a Pyongyang meeting and the US looking for a neutral site like Ulaanbaatar, the capital of Mongolia.
CNN quoted USA officials as saying that the summit will be held at the Mongolian capital Ulaanbaatar - a proposal that North Korea has already relayed to the United States, according Japanese newspaper Asahi Shimbun.
The North Koreans are pushing to have the meeting in their capital, Pyongyang, the sources said, although it is unclear whether the White House would be willing to hold the talks there. There was no immediate word on the possible venue for the talks, which would be the first ever between a sitting US president and North Korean leader.
Former Central Intelligence Agency Director Mike Pompeo, who awaits Congressional confirmation for his appointment as a secretary of state.
Whether or not Kim had genuinely offered to discuss dismantling his nuclear program was a key question surrounding his offer to meet Trump, made in March and conveyed to the US via a South Korean envoy. "If there were such talks, we think it's a positive move".
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They don't even want to take it. -China trade battles playing out. "We can not dictate a change in trade deficit or surplus. USA and Chinese officials have been expressing optimism that a full-blown trade war can be averted through negotiations.
While Trump is "looking forward to the summit", the schedule could be late May or even early June, CNN said.
But the fact that the USA has confirmed North Korea's willingness to even discuss denuclearization is a positive step toward the Trump-Kim meeting actually taking place, and suggests they are communicating directly in preparation for it.
In a separate report, a United States think-tank says North Korea may have started testing a new reactor.
Analysts echoed that the efforts show that the U.S. intelligence agencies are taking the lead for summit preparations, but expressed skepticism whether such moves were headed by the North's Reconnaissance General Bureau, which deals with clandestine operations against South Korea.
According to the report, American officials are said to have spoken several times with their North Korean counterparts, and even met up with them up to three times to discuss preparations.