President Donald Trump and North Korea's Kim Jong Un concluded an extraordinary nuclear summit Tuesday by signing a document in which Trump pledged "security guarantees" to the North and Kim reiterated his commitment to "complete denuclearization of the Korean Peninsula".
Singapore Summit news hub is now active on the AP News site and the mobile app.
Still, word that the two planned a private tete-a-tete had unleashed a torrent of criticism on social media even before the summit began.
No details were given on any possible progress in preliminary talks between aides at the talks.
Trump and Kim chatted amiably out of earshot as they walked into the building for the private meeting that preceded a full bilateral conference that included aides and advisers.
He says Kim Jong Un's definition of denuclearization may be different than ours. Or, it could amount to little more than a much-photographed handshake.
Trump spoke only briefly in public on Monday, forecasting a "nice" outcome.
Mr Kim enjoyed great nocturnal views, it reported, adding that its leader "is going to learn a lot from the good knowledge and experience of Singapore in various fields in the future".
"The other problem is that he's anxious to see some progress at the summit, and human rights is not an easy issue to raise with Kim Jong Un", King said.
"We're starting that process very quickly", Trump said during a brief signing ceremony, again providing few specifics following a day of ceremony and bonhomie with his former rival Kim. Trump had earlier tweeted about "excitement in the air!"
As Trump was trying to build a bridge with Kim, he was smashing longtime alliances with Western allies with his abrasive performance at the G-7. After his premature departure from Quebec, he continued to tweet angrily at Trudeau from Singapore, saying Monday, "Fair Trade is now to be called Fool Trade if it is not Reciprocal".
"Excellent relationship", he said as he emerged from one-on-one talks after 38 minutes.
It was a far cry from previous year when Trump threatened North Korea with "fire and fury" and mocked Kim as "little rocket man", and Kim denounced the USA president as the "mentally deranged U.S. dotard".
At one point, Trump suggested to reporters the talks could extend to a second or even a third day if they were going well.
"The discussions between the United States and North Korea are ongoing and have moved more quickly than expected", the White House said in a statement.
He would not say whether that included the possibility of withdrawing US troops from the Korean Peninsula, but said the context of the discussions was "radically different than ever before".
US presidents have always faced a predicament in balancing national security and geopolitical priorities with democratic values.
The summit capped a dizzying few days of foreign policy activity for Trump, who shocked USA allies over the weekend by using a meeting in Canada of the Group of Seven industrialized economies to alienate America's closest friends in the West. Lashing out over trade practices, Trump lobbed insults at his G-7 host, Canadian Prime Minister Justin Trudeau.
Trump also said he would "absolutely" invite Kim to the White House.
In the run-up to the talks in Singapore, Trump had optimistically predicted the two men could strike a nuclear deal or forge a formal end to the Korean War in the course of a single meeting or over several days. The official wasn't authorized to discuss the plans and insisted on anonymity.
Talks seemed friendly over the table, which included USA secretary of state Mike Pompeo and Trump's top security advisor John Bolton. "It is also important that diplomatic processes pave the way for progress on human rights issues, from family reunions to engagement with global mechanisms", he said expressing hope that all parties will seize the opportunity to support a peaceful, prosperous, secure, and verifiably denuclearised Korean Peninsula.
He would not say whether that included the possibility of withdrawing US troops from the Korean Peninsula, but stressed the context of the discussions was "radically different than ever before". "He's very happy to carry out the things I've been saying".
He would not say whether that included the possibility of withdrawing USA troops from the Korean Peninsula, but said the US was "prepared to take what will be security assurances that are different, unique, than America's been willing to provide previously".
Kim was not believed to have left his hotel since a meeting with Singapore Prime Minister Lee Hsien Loong soon after his arrival in the city on Sunday, but he ventured out on Monday evening. "But I am very optimistic that we will have a successful outcome from tomorrow's meeting between these two leaders".
"Working together, we'll get it taken care of", Trump said. The meetings also served as an ice breaker of sorts as the teams worked to get better acquainted after decades of minimal U.S.
A USA official confirmed to CNN Trump's departure was moved up by more than 12 hours because Kim set his own departure for shortly after the summit, as first reported by Bloomberg.
Asked Saturday about his goals, he said: "Well, I think the minimum would be relationship".
The North has faced crippling diplomatic and economic sanctions as it has advanced development of its nuclear and ballistic missile programs.