South Koreans watch on a screen reporting on the U.S. President Trump meeting with North Korean leader Kim Jong-un at the Seoul Railway Station on June 12, 2018 in Seoul, South Korea. On the day before the meeting, weeks of preparation appeared to pick up in pace, with USA and North Korean officials meeting throughout Monday at a Singapore hotel.
After a handshake, they were soon smiling and holding each other by the arm, before Trump guided Kim to the library where they held a meeting with only their interpreters.
It marked the first time in history that a North Korean leader was meeting with a sitting US president.
When Singaporean Prime Minister Lee Hsien Loong visited the worldwide media center for the summit at F1 Pit Building on Sunday, he said it will cost the city state "around 20 million Singaporean dollars" (W16.1 billion, US$1=W1,078) to host the "historic summit".
Analysts remain sceptical that Kim, who has repeatedly linked nuclear weapons with the survival of his regime, is willing to give up any part of his arsenal.
The US President is reportedly spending a bit more time with PM Lee today - two hours of talks and a working lunch together with government officials from respective countries, according to Channel NewsAsia.
Trump advisers cast his actions as a show of strength before the Kim meeting.More news: Decisions, Decisions: What will LeBron James do this summer?
"It was not an easy journey", Kim said earlier.
The eccentric former basketball player and reality television star is one of the few westerners to have spent time with Mr Kim during multiple visits to Pyongyang.
The North Korean leader reportedly arrived at Changi Airport in Singapore Sunday afternoon, where he was met by the Minister for Foreign Affairs Vivian Balakrishnan.
"I think better than anybody could've expected", Trump told reporters at the time, as Kim smiled beside him.
Trump and Kim struck an cordial and optimistic tone from the beginning, with Trump pledging to "have a great discussion" and Kim lauding both countries for overcoming obstacles to make the meeting happen. His public statements and state-run media indicate he wants a deal to ease sanctions, but that he won't give up his nuclear weapons until he feels safe enough to retain power without them.
He added there was no mention of verifiable or irreversible denuclearization in the Singapore summit agreement. Kim is seeking a security guarantee - and possibly a peace treaty - and the removal of the U.S.'s nuclear umbrella protecting allies South Korea and Japan.
The former Central Intelligence Agency chief said USA sanctions will remain in place until Washington verifies the North's denuclearization efforts.
"You can see Trump leads the way a lot".