After months of nuclear taunts, sports diplomacy and a rollercoaster of a will-they-or-won't-they tango, it all comes down to this: President TrumpDonald John TrumpTrump: "Excitement in the air" ahead of Kim meeting Trump doubles down on criticism of EU, Canada Merkel: EU will retaliate against Trump tariffs MORE will meet face-to-face with North Korean leader Kim Jong Un in Singapore on Tuesday.
Kim's full delegation has not yet been confirmed, but other prominent North Korean officials seen in photos included foreign minister Ri Yong Ho and Kim Chang Son - the man who has been in Singapore in recent weeks negotiating logistical details for the summit.
All his running bodyguards were decked up in black suits and blue ties.
North Korea's Kim landed Singapore's Changi Airport earlier on Sunday, in his longest trip overseas as head of state. While Kim and his delegation are now staying at the St. Regis Hotel amid heavy security.
"The worry we have is the president will be so eager for quote "an agreement" that it won't protect the security, first and foremost, of the United States", Senate Minority Leader Charles Schumer, D-N.Y., told NPR on Tuesday.
In March, Trump surprised the world by accepting an invitation from Kim to meet in person.
A Trump administration official, speaking on condition of anonymity, said the USA side was entering the talks with a sense of optimism and an equal dose of scepticism given North Korea's long history of developing nuclear weapons. "Denuclearization will not happen overnight, but a summit could get the ball rolling on both sides".
Kim Jong Un will undoubtedly get a sense of all that as he arrives.
While Singapore has authoritarian leanings, it is still a thriving bastion of capitalism and wealth, and Kim will be performing his high-stakes diplomatic tight-rope walk in front of 3,000 global journalists, including a huge contingent from the ultra-aggressive South Korean press - sometimes referred to by Pyongyang as "reptile media" - two of whom were arrested by Singapore police investigating a report of trespassing at the residence of the North Korean ambassador. He released a photograph from inside the room of North Korean vice foreign minister Choi Sun-hee smiling across the table at the United States lead negotiator, the Philippines ambassador Sung Kim.
Trump also reaffirmed the tight US-Singapore relations by reassuring PM Lee that he was "his friend".
Some people were grumbling in the wealthy city-state because of the traffic jams caused by the summit and the cost of hosting two leaders with massive security needs. The president wants the complete, verifiable and irreversible dismantling of his nuclear weapons program. It started with significant diplomatic overtures from North Korea towards South Korea during the Winter Olympics.
Trump pushed back on criticism that giving the North Korean leader a meeting with an American president is a major concession with nothing of value in return.
President Trump has described it as a "get-to-know-you situation" and said "it's going to be a process".
Secretary of State Mike Pompeo said Mr. Trump and the entire US team was looking forward to Tuesday's summit.
Ahead of his much-anticipated meeting with Kim, the US President sounded optimistic and said the meeting would be a "one-time shot" at peace.
Mr Kim has also said he wants to focus on building the North Korean economy - and thus wants sanctions relief and global investment.
The Rodong Sinmun newspaper had a two page colour spread on Kim's departure for a "historic summit" and the Korean Central News Agency declared that the meeting would address denuclearisation, permanent peace on the Peninsula and other matters "required by the changed era".