Watch our comprehensive coverage of the Trump-Kim summit live on YouTube from 7am on Tuesday (Jun 12).
Trump spoke to a group of White House reporters in Charlevoix in the Canadian province of Quebec after cutting short his appearance at the G-7 leaders' gathering. The official was not authorized to speak publicly about internal deliberations and insisted on anonymity.
The US president was the first of the G7 leaders to leave the summit in Canada where he briefed his peers on the meeting.
The meeting comes on the eve of a historic summit between Trump and North Korean dictator Kim Jong-un.
"Great to be in Singapore, excitement in the air!"
He has said the talks would be more about starting a relationship with Kim for a negotiating process that would take more than one summit.
Singapore is hosting this year's meetings of the Association of Southeast Asian Nations, which has seen the USA and China jockey for diplomatic influence in recent weeks.
Hammering out a complete plan for North Korea's denuclearization would be "an impossible chore" at this summit, Michael O'Hanlon of the Brookings Institution told NPR. -North Korea meetings, including translators, photographers and logistical staff, asking how they can be sure they are not actually spies.
You would never know something as historic as the Trump-Kim summit was about to happen in the city state of Singapore.
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But US Secretary of State Mike Pompeo said the two-hour meeting on Monday morning was "substantive and detailed".
Rodman announced on Twitter that he would be attending the summit in Singapore to give "whatever support is needed to my friends" referring to both Trump and Kim.
Trump, who is offering to reduce economic sanctions on North Korea in exchange for denuclearisation, also seemed to warn Kim that the summit is a "one-time opportunity" that should not be wasted.
Victor Cha, top North Korea expert in the George W. Bush administration who Trump considered for South Korea ambassador, said a worst-case scenario would be that Trump puts everything on the table, prompting Kim to either balk - leading to Trump giving up - or make a vague proclamation of denuclearizing - leading to Trump declaring victory. The truest measure of the success of the Singapore Dialogue will be an agreement by Trump and Kim to meet again in the near future.
Apart from breaking a year-long deadlock on nuclear negotiations, Pyongyang also eyes an overall improvement of the US-North Korea bilateral ties and "other issues of mutual concern as required by the changed era", KCNA reported, adding that the delegations will share "wide-ranging and profound views on the issue of establishing new DPRK-US relations".
The president has sought to tamp down expectations for the summit, which had grown to include Nobel Peace Prize chatter. "But I see over a period of time". "Thank you very much".
While advisers insist Trump has been reviewing briefing materials, he insists his gut instincts will matter most when he gets in the room with Kim.
The pair are scheduled to meet at 9am local time on Tuesday, and will hold one-on-one talks for around two hours before being joined by their aides. That's what I do.
Dismantling a secret nuclear arsenal built up over decades would take several years and be extremely hard to check, they say.
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