DPRK leader Kim Jong-UN has set a deadline of the end of the summit with the American President in Singapore, what prompted Donald trump to return to the U.S.
Trump and Kim will first meet one-on-one in a closed session, before a larger meeting with key advisers, the White House said.
"Stock Market up nearly 40% since the Election, with 7 Trillion Dollars of USA value built throughout the economy", the president wrote in a series of pre-dawn tweets sent from Singapore.
He also claimed that denuclearisation would mean a "bright and better future" for the North Koreans.
Critics at home said the joint statement by the two leaders was short on detail and that Trump had made too many concessions to Kim.
Even after he entered his motorcade and began heading to the momentous meeting with Jong Un, Trump couldn't help but fire off one more message to his followers.
The president planned to stop in Guam and Hawaii on his way back to Washington.
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In 2014, Trump tweeted dismissively about the possibility that he and Rodman would someday travel to North Korea together.
The famously reclusive Mr Kim was out and about in Singapore today.
It was a striking about-face from less than a year ago, when Mr Trump was threatening "fire and fury" against Mr Kim, who in turn scorned the American president as a "mentally deranged USA dotard".
Earlier in the day, he had lunch with Singapore's President Lee Hsien Loong and was presented with a cake ahead of his birthday on Thursday.
The United States are demanding that North Korea denuclearise in exchange for security guarantees.
On the way forward, Pompeo said, "I don't know exactly what the timing will be for our next conversation with the North Koreans".
Mr Kim arrived in Singapore on Sunday. A Quinnipiac poll notes about 72 percent of voters approve of Trump's meeting with Kim, though only 20 percent of them think North Korea's actually willing to give up its nuclear weapons.