Kim could also meet with Vietnam's President Nguyễn Phú Trọng before sitting down with Trump.
Gen. Abrams stressed that even if the United States eliminates the nuclear menace, US troops will need to remain in the region to combat other conventional threats to American interests posed by North Korea.
There are now about 28,500 USA troops stationed in South Korea.
Ananti has built and managed golf courses and condominiums across the Korean peninsula, including one located in the joint tourist complex at Kumgangsan in North Korea's Kangwon Province, called Kumgang Ananti Golf and Spa Resort.
The White House declined comment on Davidson's remarks.
Abrams also said the last time that North Korea launched a ballistic missile or conducted a nuclear weapons test was before the first Trump-Kim summit. He's now said that more than a dozen issues were discussed during those talks. For three decades of intermittent starvation and eccentric despotism, North Korea has sought to build a nuclear arsenal....More news: Donut Sticks coming to a McDonald's near you
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Davidson also noted that North Korea had demanded "corresponding" USA steps and that Kim had warned in a New Year speech of a potential "new path", which could indicate an eventual return to weapons testing, if he was not satisfied with the negotiations.
Flags of the USA and North Korea adorn a street in Hanoi, Vietnam on January 29.
U.S. Secretary State Mike Pompeo told Congress in July that North Korea was continuing to produce fuel for nuclear bombs in spite of its pledge to denuclearize, even as he argued - as he has continued to do - that the Trump administration was making progress in talks with Pyongyang.
"With only two weeks until the summit, it will be hard to resolve all the tricky issues, but there's a chance if we can agree on a timeline (for denuclearization)", a South Korean delegation member quoted Biegun as saying.
A sign for the PyeongChang 2018 Winter Olympics is displayed by a road leading into PyeongChang, on February 11, 2018, in Pyeongchang-gun, South Korea. The North Koreans apparently focused on how Kim will get around Hanoi as well as security and protocol issues.
Researchers said a pause in testing since 2017 had limited North Korea's capability but that its weapons posed a real threat to nearby Japan and South Korea.
In talks with the United States, North Korea has been seeking a lifting of punishing US -led sanctions, a formal end to the 1950-53 Korean War, and security guarantees. "These capabilities continue to hold the United States, the Republic of Korea and our regional allies at risk".