"It's hospitality that we would have offered them, and as Chairman Kim said yesterday, he would have liked to have come to Singapore anyway, with or without the summit", Dr. Balakrishnan told the BBC.
The North Korean leader reportedly arrived at Changi Airport in Singapore Sunday afternoon, where he was met by the Minister for Foreign Affairs Vivian Balakrishnan.
Trump will also speak with reporters in Singapore before departing for home.
In a statement Monday, British Prime Minister Theresa May said: "I want to pay a particular tribute to Prime Minister Trudeau for his leadership and skillful chairing". They will be joined only by translators and will spend a couple of hours before admitting their close advisers to the meeting.
Trump, a former real-estate developer, has approached his meeting with Kim like a business negotiation - with flattery, flashy promises and flexible terms juxtaposed with constant threats to walk away from the table.
Officials from the two sides held last-minute talks aimed at laying the groundwork for a meeting that was nearly unthinkable just months ago when the two leaders were exchanging insults and threats + that raised fears of war. In my meetings with North Korea's foreign ministry, its officials have repeatedly emphasized that only a leader-to-leader dialogue could break the nuclear impasse.
"North Korea's nuclear command, control, communications and intelligence is configured to promote a high degree of centralisation in Kim's decision-making, it beggars belief that Kim would not be within secure reach to authorise a possible launch if required", O'Neil added.
He initially touted the potential for a grand bargain with North Korea to rid itself of a nuclear missile program that has advanced rapidly to threaten the United States.
In a sign of lingering tensions, the North Koreans have been closely scrutinizing all American staffers who are slated to be in any U.S.
Trump sounded a positive note in a lunch meeting with Singapore's Prime Minister Lee Hsien Loong. "Beijing would welcome the further relaxation of sanctions and North Korea's diplomatic isolation", the report says.
Diplomats and foreign policy experts have criticized the idea of a USA president sitting down solo with the North Korean dictator, saying it heightens the potential for a misleading readout from Kim that could come into conflict with Trump's account of the exchange.
Some people were grumbling in the wealthy city-state because of the traffic jams caused by the summit and the cost of hosting two leaders with massive security needs. Kim has sought to overhaul his image this year in a bid to ease worldwide sanctions imposed after he tested nuclear bombs and long-range ballistic missiles.
Trump continued to tweet angrily at Trudeau from Singapore, saying Monday: "Fair Trade is now to be called Fool Trade if it is not Reciprocal".
Trump suggested last week the two leaders may sign a peace agreement to formally end the Korean War 65 years after the armistice that ceased military hostilities. Trump said. "Well, I think very quickly I'll know whether something good is going to happen".
The commemorative coin issued ahead of the US-North Korea summit.