Secretary of State Mike Pompeo is traveling to Singapore with Trump and is expected to travel to Japan, South Korea, and China directly following the summit to coordinate the outcome of the meeting with the regional allies.
While on-route to Singapore on Air Force One, Trump took to Twitter to slam Canadian prime minster Justin Trudeau for being "meek and mild" during the G7 meetings and proceeded to also call the latter "dishonest and weak". "I would say plus or minus around $20 million", Lee told reporters.
However, Trump and his aides insist that a US -led "maximum pressure" campaign of the toughest-ever economic sanctions, diplomatic action and military threats is what has drawn Kim to the negotiating table.
Both Kim and Trump arrived in Singapore earlier on Sunday.
The North, many experts believe, stands on the brink of being able to target the entire USA mainland with its nuclear-armed missiles, and while there is deep scepticism that Mr Kim will quickly give up those hard-won nuclear weapons, there is also some hope that diplomacy can replace the animosity between the U.S. and the North. Rodman went on Instagram to announce that he will be there to "give whatever support is needed" for Trump and Jong Un.
"Thanks PM Lee for spending $20 million of taxpayers money, which can. help a lot of needy families in Singapore to survive", posted one Facebook user.
Earlier in the week, Trump also said he has done little preparation for the meeting, noting that the meeting would be all about "attitude".
In a statement released by the state news agency KCNA, it said the two leaders would discuss a "permanent and durable peace-keeping mechanism" for the Korean Peninsula, the "denuclearisation" of the Korean peninsula and other issues of mutual concern.
After a flurry of diplomatic efforts, including a White House meeting between by Kim's right-hand man Kim Yong-chol and Trump, the proposed summit was put back on.
While Kim has shown he's willing to bargain, O'Hanlon said, "Giving up his nuclear weapons is probably going to be the last step in that process, not the first step".
This will be the first summit of its kind between a leader of North Korea and a sitting US president.
The Chinese plane that carried Kim landed at Changi Airport Sunday afternoon amid tight security, as Kim is set to hold a high-stakes meeting with Trump in the city-state on Tuesday.
Kim smiled broadly in the meeting Sunday evening.
A U.S. official, speaking on condition of anonymity, said Monday's meeting appeared aimed at making 11th-hour progress ahead of the summit since Sung Kim's earlier talks did little to narrow a gap between the two sides on the definition of denuclearisation or win agreement on tangible commitments from Pyongyang toward dismantling its nuclear arsenal.