While the summit reaffirms the U.S.'s close ties with Singapore - long one of America's best partners in South Asia - local officials have in recent weeks criticized Trump's efforts to reverse what he says are unfair trade practices. The official was not authorized to speak publicly about internal deliberations and insisted on anonymity.
Korean Studies Institute director David Kang lowered expectations for Tuesday's summit, saying: "The most we can hope to get out of this is that Kim and Trump find that they can have some working relationship".
It was reported that Kim planned to fly back to North Korea in the early afternoon on Thursday, leaving very little time for actual negotiations, although there is still considerable uncertainty about what a deal between the leaders would look like.
Several of the reporters who accompanied Kim to Singapore had also been to the demilitarized zone between the two Koreas in April for the inter-Korean summit. Though North Koreans have been left largely in the dark about the summit, the reports of his arrival came relatively quickly by North Korean standards.
Discussions would focus on "the issue of building a permanent and durable peace-keeping mechanism on the Korean peninsula, the issue of realising the denuclearisation of the Korean peninsula and other issues of mutual concern", KCNA said.
"Great to be in Singapore, excitement in the air!" the president tweeted on Sunday after landing in Singapore, where U.S.
A United States official said Monday that after a handshake scheduled for 9 am Tuesday, Trump and Kim will first meet one on one with translators in a session that could last up to two hours before they open the meeting to their respective advisers.
Kim Hyo-sun, Arirang News.
Kim held a meeting with Singapore Prime Minister Lee Hsien Loong ahead of the planned summit.
Trump and Kim arrived in Singapore hours apart Sunday.
Trump, 71, landed at Paya Lebar Airbase on board Air Force One after cutting short his time at the G7 summit in Canada.
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In March, Trump surprised the world by accepting an invitation from Kim to meet in person.
Citing an unnamed USA government official, . The North has faced crippling diplomatic and economic sanctions as it has advanced development of its nuclear and ballistic missile programs.
The U.S. also wishes to win agreement on tangible denuclearization commitments from the North.
Earlier in the day, a team of USA negotiators arrived at the Ritz-Carlton hotel to meet with its North Korean counterparts to try to nail down final details for the summit, the first between a sitting US president and a North Korean leader. Francis said he wanted yet again to send "a special thought in friendship and prayer" to the beloved Korean people.
He was greeted by Singapore's foreign minister, Vivian Balakrishnan, who posted a picture on Twitter of him shaking hands with Kim and the message: "Welcomed Chairman Kim Jong Un, who has just arrived in Singapore".
It's Kim's pursuit of nuclear weapons that gives his meeting with Trump such high stakes.
Kim told Lee: "The entire world is watching the historic summit between the DPRK and the United States of America, and thanks to your honest efforts. we were able to complete the preparation for the historic summit".
It was not clear what Kim Jong Un, who arrived Sunday afternoon, was planning to do on Monday or whether he meant to leave his hotel, the St. Regis, about a half-mile from where Trump's delegation is staying.
Some 2,500 journalists and photographers from around the world are accredited to cover the summit, which is due to take place on Tuesday morning at the Capella Hotel on Sentosa.
Many experts on North Korea, one of the most insular and unpredictable countries in the world, remain sceptical Kim will ever completely abandon its cherished nuclear weapons.