In return for safeguards and potential economic help, Trump demanded "complete, verifiable and irreversible" destruction of North Korea's nukes. "If diplomacy doesn't move in the right direction, sanctions will increase".
"There's a special place in hell for any foreign leader that engages in bad-faith diplomacy with President Donald J. Trump and then tries to stab him in the back on the way out the door", said United States trade advisor Peter Navarro. He said that those talks "in fact are moving quite rapidly and will come to a logical conclusion more quickly than anticipated".
Both North Korea and the United States have expressed expectations for the outcomes of their first summit meeting set to open in Singapore on Tuesday.
South Korea's president on Monday welcomed the upcoming Singapore summit as a "historic milestone" to ease tensions on the Korean Peninsula, but noted that Seoul must be part of any future negotiations with the North, which could take years.
Rodong said Kim is in Singapore to work on 'establishing new DPRK-U.S. relations... building a durable peace-keeping mechanism on the Korean Peninsula...realizing the denuclearization of the Korean peninsula and other issues of mutual concern'.
Secretary of State Mike Pompeo said Mr. Trump and the entire US team was looking forward to Tuesday's summit.More news: Liverpool target Alisson Becker wants future resolved before World Cup starts
Some foreign-policy experts said the breakdown at the Group of 7 meeting would play to North Korea's advantage, since Mr. Trump can ill afford a second failed summit, back to back.
North Korean leader Kim Jong-un arrives in Singapore on Sunday.
The North Korean leader then traveled to the St. Regis Hotel - where he will be staying for the duration of the visit - in his armored limousine, which arrived on a separate flight.
"People call it a historic summit but.it is important to understand that this summit was available to any USA president who wanted to do it and the point is no US president wanted to do this, and for good reasons", said Christopher Hill, a former lead US nuclear negotiator with North Korea.
Choi's fiery outburst at Trump's national security advisor John Bolton and Vice President Mike Pence had a fortnight ago been blamed for Trump suddenly, and briefly, cancelling the summit.
There was also no sign of his sister, Kim Yo Jong, who has accompanied him to Singapore.More news: Donald Trump, Kim Jong Un prepare for Singapore summit
But Trump said: "We could absolutely sign an agreement and we're looking at it", adding: "Sounds a little bit unusual, but that's probably the easy part".
Prime Minister Narendra Modi, aware of the historic summit, addressed the crucial Shangri La Dialogue in Singapore impressing on all for the peaceful, safe and secure region earlier this month. "Why would Kim. believe any commitments President Trump makes when he arbitrarily tears up an agreement with which the other party is complying?" said Antony Blinken, who was deputy secretary of state under Barack Obama.
At a press conference earlier on Sunday, Loong said that the summit cost approximately $20 million, which is a price the Singapore was "willing to pay".
The summit's venue is the Capella hotel on Sentosa, a resort island off Singapore's port with luxury hotels, a Universal Studios theme park and man-made beaches.
But there are doubts denuclearisation of North Korea is achievable in the short term.
"Maybe we'll start with the White House, what do you think?" he said when asked if Kim would be invited to Washington or his Mar-a-Lago estate in Florida.More news: Larry Kudlow calls Justin Trudeau's verbal attacks 'amateurish,' a 'betrayal'