Trump and Kim are expected to meet face to face at a location that has yet to be determined.
"It is the job of South Korean President Moon Jae In to lay the groundwork for the U.S". "He spoke those words as if they were his will".
Kim will step into South Korean territory for the first time as leader for Friday's meeting in Panmunjom.
While talks to promote economic ties between the two Koreas are likely to take a backseat as North Korea remains under the pressure of global sanctions imposed over its weapons development, Yi stressed the significance of the planned discussions on the establishment of "permanent peace" on the Korean Peninsula.
An "ideal scenario" would be Kim expressing a clear commitment to denuclearise on Friday, Hong said, before laying out specific plans in the summit with Trump such as a timetable to let United Nations inspectors into its nuclear facilities.
Analysts say it's likely that Kim will make similar commitments during the inter-Korean summit as a way of reaching out to the United States.
Analysts are sceptical over his offer to suspend nuclear and long-range missile tests, noting he signalled no intention of actually disarming.
On Monday, Moon said it was "a significant decision towards total denuclearisation of the Korean peninsula".
Although such a move might be unsurprising in other countries, it is an unusual portrayal of Kim, who is usually shown presiding over formal meetings or visiting work or army units. Trump could storm out, leaving us closer to the brink of war.
Seoul has said turning off the broadcasts helps set the tone for Friday's top-level talks however North Korea has not necessarily responded in kind. "Whether it's denuclearization or peace, what we are trying to have is mutual prosperity".
South Koreans have lived for decades under the threat of war with their hostile and now nuclear-armed neighbour. It recently agreed with the United Nations on a strategic framework for cooperation (DPRK UN Strategic Framework (UNSF) for Cooperation) in all their cooperation projects between 2017 and 2021, whose goal is to improve the well-being of the North Korean people, particularly vulnerable groups, and applies a human rights-based approach meant to put people at the center of all dealings with the DPRK.
Moon's approach represented a sharp departure from the hard-line take of his disgraced predecessor, President Park Geun-hye, the daughter of South Korea's former dictator.
"This summit is a crucial moment for inter-Korean relations and particularly for the long-suffering people of North Korea", said Adams. In a September tweet, Trump lamented South Korean "appeasement". The junior Kim is again following the example of his father, who in 2008 blew upthe cooling tower of a nuclear facility to show he was serious about talks.
In the American view, the coming meeting is the result of sanctions and pressure, so surely Mr. Kim is prepared to discuss the degree of his nuclear surrender.
Administration officials say President Trump wants Kim Jong Un to dismantle his nuclear program before the US commits to any sanctions relief; Gillian Turner reports from Washington.
The North's leader, believed to be in his mid-30s, has overseen four of the country's six nuclear tests and Pyongyang hails the weapons as a "treasured sword" protecting the country from potential United States invasion.