The summit - the first ever between a sitting U.S. president and North Korea's leader - was to kick off at 9 a.m., the White House said.
Trump initially touted the potential for a grand bargain with North Korea to rid itself of a nuclear missile programme that has advanced rapidly to threaten the United States, insisting he would swiftly achieve what previous USA administrations have failed to do. Kim Yong Chol, the North Korean leader's right-hand man, and Vice Minister of Foreign Affairs Choe Son Hui were also included in the entourage.
"The entire world is watching the historic summit between (North Korea) and the United States of America, and thanks to your honest efforts. we were able to complete the preparations for the historic summit", Kim told Lee through an interpreter.
Though Trump has been criticized for his failure to demand more concessions from North Korea before agreeing to a face-to-face meeting, which experts say gives Kim the sort of legitimacy on the global stage he desires, downplaying expectations does two things.
The White House said the daylong summit would also include a working lunch and a larger meeting involving aides to both leaders.
Dressed in his trademark, ill-fitting, dark gray Mao suit, and sweating in Singapore's tropical humidity, Kim visited some of Singapore's most famous tourist attractions.
But it is Kim's pursuit of nuclear weapons that gives his meeting with Mr. Trump such high stakes.
"The Police seek the understanding and cooperation of the public as these measures are necessary to ensuring the security of the summit", it added.
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President Trump traveled to the summit - which will be the first-ever meeting between a USA president and a North Korean leader - from a G7 meeting in Quebec, Canada.
Exuding confidence, Trump said he has done relatively little formal preparation.
The US Secretary of State Mike Pompeo has said Mr Trump's "ultimate objective" will be the "irreversible" denuclearisation of Mr Kim's regime.
According to Howard, officials at the airport detained him for "two hours" before warning him to avoid locations linked to the Trump Kim Summit.
While fighting a trade war with allies, Trump now brings his America First negotiating style to the deadly topic of North Korea's nuclear weapons.
Howard has been making quite a splash on social media, posing alongside Donald Trump impersonator Dennis Alan, holding an unofficial summit of their own on the sidelines.
"I think within the first minute I'll know", Trump said. I feel that Kim Jong Un wants to do something great for his people, and he has that opportunity.
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