At the G7 summit in Canada and in the hours afterward, Trump railed against trade practices that he described as unfair and said he'd given USA representatives instructions to rescind an agreement to official communique that outlined a mutual plan to ensure "free, fair, and mutually beneficial trade".
The two leaders are scheduled to meet for the first time on Tuesday at the Capella Hotel on Sentosa Island, where the process regarding denuclearisation of North Korea may kick-start in exchange for economic aid.
Ms Serena Lim, 58, who is in the property industry, said: "It's an honour that Singapore was chosen to host the summit".
Trump descended from Air Force One into the steamy tropical night, before he was whisked away to his hotel, driving along a route lined with police and photo snapping onlookers.
Hours earlier, a jet carrying Kim landed.
The North Korean leader shook hands with Singaporean Foreign Minister Vivian Balakrishnan shortly after arriving at Singapore's Chagi airport.
Trump is set to meet with Lee on Monday. "I really really appreciate it, because we are really cash-strapped", Howard X said as dozens lined up for their turn with him.
US President Donald Trump is set to discuss North Korea’s nuclear weapons at an unprecedented summit with Kim Jong Un
The North, many experts believe, stands on the brink of being able to target the entire United States mainland with its nuclear-armed missiles, and while there's deep scepticism that Mr Kim will quickly give up those hard-won nukes, there is also some hope that diplomacy can replace the animosity between the USA and the North.
PM Lee also said Singapore has "made sure to see to the details and the big picture", citing how the Home Team has found Korean speakers among its ranks to help with summit preparations.
"They're a much different country over the last three months".
Participants hold candles and cardboard cutouts of the map of Korean Peninsula during a rally wishing for a successful summit between U.S. President Donald Trump and North Korea's leader Kim Jong Un, near the U.S. embassy in Seoul, South Korea, June 9, 2018.
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".
It's Kim's pursuit of nuclear weapons that gives his meeting with Trump such high stakes. While hostilities ended with an armistice in 1953, no peace treaty has been signed yet.
It's not just the logistics of Kim's trip that are unclear.
ICC overturns conviction of Congo warlord Bemba
Congo government spokesman Lambert Mende said that Bemba had the right to return home if released, Reuters reported. Judges are to decide "shortly whether Mr Bemba's continued detention is warranted", Van den Wyngaert said.