Trump descended from Air Force One into the steamy Singapore night, greeting officials and declaring he felt "very good" before being whisked away to his hotel via a route lined with police and photo-snapping onlookers. This is just an elaborate get-to-know-you session, albeit between the two most famous leaders in the world, and nuclear armed at that.
Trump and Kim may well end up branding tomorrow's summit a success.
Although gaps remain over what denuclearisation would entail, Trump sounded a positive note in a lunch meeting with Singapore's Prime Minister Lee Hsien Loong. Trump then directed Kim to walk down a hallway, where they briefly spoke. The official was not authorized to speak publicly about internal deliberations and insisted on anonymity.
Officials remain uncertain what will come out of Tuesday's unprecedented summit, the first of its kind between a sitting US president and the leader of North Korea.
Trump has said he wants to strike a deal to get the North to give up its nuclear weapons. But it will only be the beginning of a longer process. Lee has said the summit would cost Singapore about S$20 million ($15 million), more than half of which would go on security.
President Trump, Kim Jong Un meet for historic summit
U.S. and North Korean officials are set to meet Monday morning in Singapore to make final preparations for Tuesday's meeting.
Trump and Kim planned to meet one-on-one for most of an hour- joined only by translators.
The White House said Trump will leave Singapore 15 hours ahead of schedule, flying back to Washington on Tuesday night instead of Wednesday morning.
Despite the optimism, it's unclear whether the gap between the United States and North Korea over what denuclearization means has been bridged. Trump left the summit early, and as he flew to Singapore, he tweeted that he was yanking the USA out of the group's traditional closing statement.
Kim and Trump arrived in tropical Singapore on Sunday for the first ever face-to-face meeting by leaders of two countries that have been enemies since the 1950-1953 Korean War.More news: Del Potro Can Trouble Nadal During Semi-Final Clash, Wilander Says
"While a summit between Trump and Kim would be historic, it is unlikely to be decisive". China and South Korea would have to sign off on any legal treaty.
Trump advisers cast his actions as a show of strength before the Kim meeting.
He said about half of the cost is for security. Pyongyang's weapons program benefits from forced labor.
Under Kim Jong Un, the third-generation dictator of the country established in 1948, North Korea has rapidly advanced its nuclear capabilities.
Sanctions on North Korea would remain in place until that had happened, Pompeo said.More news: IHOP reveals the secret behind their new name IHOb
On Monday, North Korean leader Kim Jong Un visited the luxury Marina Bay Sands resort as part of a tour of Singapore's attractions.
The North Korean motorcade, believed to be carrying North Korean leader Kim Jong Un, travels along Singapore's Orchard Road, June 10, 2018, ahead of the summit with United States leader Donald Trump.More news: Everything that happened at Ubisoft's Aisha Tyler-less E3 press conference