But a report to the UN Security Council on Monday suggested North Korea was continuing its nuclear and missiles programmes, while making efforts to protect its facilities from possible future strike.
Trump has been eager for a second summit despite a lack of significant moves by North Korea to give up its nuclear weapons program. More than seven months since they met, North Korea has made no commitments to allow weapons inspections or dismantle its growing arsenal of warheads and intercontinental ballistic missiles, and the US sanctions are still in place.
The President had previously announced Vietnam as the summit location, but the city had not been identified.
In Pyongyang, Biegun and Kim Hyok Chol, North Korea's special representative for USA affairs, discussed "advancing Trump and Kim's Singapore summit commitments of complete denuclearization, transforming U.S".
A South Korean government spokesperson also said he expected that the upcoming talks can produce more concrete steps. "I look forward to seeing Chairman Kim and advancing the cause of peace!" said the US President.
"The exercise plans for the first half of this year are set to be announced after the North-US summit", the source told Yonhap News Agency on condition of anonymity.
Trump has strong words of praise for Kim.
An unnamed White House official with knowledge of the second summit's planning told CBS News Vietnam had been chosen in part because of its good relationships with both the U.S. and North Korea. The margin of error was 3.1 percentage points.
These included complete denuclearisation, transformation of U.S. Moon is trying to keep Washington hard-liners at bay and create more space for inter-Korean reconciliation, which he says is crucial for resolving the nuclear standoff.
"It's the gift that keeps on giving for the North Koreans", said Bruce Klingner, senior research fellow for Northeast Asia at the Heritage Foundation in Washington.
Palladino said Vietnam is a close friend and partner of the United States.
But Trump told United States broadcaster CBS last week that he had "no plans" to remove USA troops from South Korea as part of a deal at the upcoming summit, although he admitted "maybe someday" he would withdraw them, adding: "It's very expensive to keep troops there". Trump tweeted Friday evening. They have provisionally agreed to rename them in consideration of the North's aversion to them. "They can't let another summit be called a failure".
The confidential report, a copy of which was seen by news agencies, also said North Korea was routinely breaking global sanctions.
Discussions on declaring an end to the 1950-53 Korean war could also have been on the table, with Biegun last week saying Trump was "ready to end this war".
For the USA there is always the risk that North Korea will merely make token concessions and not tangible steps towards denuclearization.
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The distance: It is not too far from North Korea, so it is easier for Kim to reach by plane.