Well, for starters, the twosides would need toestablish what denuclearisation means.
Seth Meyers gave the "Closer Look" treatment to the monumental meeting, paying particular attention to Trump and Kim's ill-fitting suits.
Shares in Butan Industrial dipped further off their recent highs following Trump's get-together with Kim Jong Un, closing around 10% lower. Trump appears to have resolved the immediate threat of war and cast himself as a peacemaker.
Canada's government has itself been criticised for its treatment of North Koreans after 150 defectors - some of whom have lived in the country for years - received letters last year that they could face deportation.
About 29,000 U.S. soldiers are based in the South, under a security agreement reached after the war ended in 1953.
The South Korean president responded positively to the summit, praising the "courage and determination" of both leaders.
Trump on Tuesday pledged to suspend the USA and South Korea's "war games", or military drills. -South Korea military exercises along the demilitarized zone separating the two Koreas, a tangible concession that drew criticism from a number of lawmakers back home.
Trump, who has frequently sparred with the media, was also unsparing in his criticism of television coverage of the summit, singling out two networks for scorn. Bush took a tougher stance toward North Korea, and the 1994 nuclear deal collapsed because of suspicions that the North was running a secret uranium program. And how can the United States make sure Kim will keep his commitments?
"It is worrisome, very worrisome that this joint statement is so imprecise", Senate Minority Leader Chuck Schumer, D-N.Y., said. Kim provided no timetable for denuclearizing or for inspections and verification. Asked about this yesterday, Trump said: "I think he wants to get it done".
The POTUS' remarks came as a big surprise to South Korea, which said on Tuesday that Washington has not reached out to them to discuss halting the military drills. How will this rapprochement affect ordinary North Koreans?
Speaker John Bercow praises behaviour of a baby in the Commons
My mixed sequence of advice is that is better for the vote to be conducted at the conclusion of questions to the prime minister... Proceedings on the EU Withdrawal Bill last night were a democratic outrage and the Scottish Parliament must be respected.
U.S. Secretary of State Mike Pompeo left Singapore on Wednesday on his way to Seoul, where he planned to meet privately in the evening with Gen. Vincent Brooks, commander of U.S. Forces Korea.
Echoing North Korean language, Mr Trump described the military exercises as "very provocative".
Interestingly, the North made no secret of China's behind-the-scenes presence at the summit.
A lot of people can claim credit for making the summit happen. Kim is likely to leave this afternoon while Trump will depart tonight. Then Trump "expressing his understanding of it", said he intends to end this "provocation". China and Singapore also provided key logistical support.
Is this summit a game-changer for Asia and the rest of the world? Which countries have the most riding on a concrete peace deal? Having open channels of communication can only minimize the risk of miscalculation.
What have observers been saying about the possibility of Trump (or Kim) getting a Nobel Peace Prize?
KCNA quoted Kim as saying that the North can take unspecified "additional good-will measures of next stage commensurate with them" if the U.S. takes genuine measures to build trust. While the President is in charge, Pompeo said he will be the one "driving this process forward".
In Pyongyang, the North Korean autocrat woke up to state media's enthusiastic claims of a victorious meeting with the US President; photos of him standing side-by-side with Trump on the world stage were splashed across newspapers. The likelihood of Trump launching a first strike against North Korea, thus setting South Korea, where more than 100,000 Americans live and/or work, ablaze and risking a strike against population centers in the US, was similarly low. However, they've long wanted a meeting with a USA president.
It was unclear whether South Korea was aware of Trump's decision before he announced it publicly. "There is no longer a Nuclear Threat from North Korea", the president wrote on Twitter shortly after arriving back in Washington.
Since the end of the Korean war, when Washington fought alongside Seoul against the North, the United States has had troops stationed in South Korea.
Only a few months ago, Kim and Trump were swapping personal insults such as "dotard" and "little rocket man" and the North conducted its sixth and most powerful nuclear test, as well as firing missiles over Japan.