The MSCI All-Country World index, which tracks shares in 47 countries was up 0.7 percent on the day and 2 percent for the week, having also been buoyed by news Donald Trump and North Korea's Kim Jong Un planned to meet by May. The star basketball player had just visited North Korea.
Stocks finished the Thursday session with gains, as President Trump signed off on tariffs, excluding Mexico and Canada, easing concerns about a trade war.
"Where is the President?" he tweeted.
Kim, on the other hand, seems desperate to save a sanctions-battered North Korean economy. "Now, (North Korea) could be lying through their teeth like they've been in the past, then getting into discussions with them, they move in a different direction, that certainly can be the case".
The White House did not say why it had changed its calculus toward North Korea by agreeing to talks without "concrete steps toward denuclearization". "But certainly North Korea".
Abraham Denmark, a top Pentagon official working on Asia policy during President Barack Obama's administration, said the United States could demand certain actions before actually organizing the summit. Mr Trump reaffirmed the US' commitment to defending Japan against a North Korean threat.
Kim and the officials shared several bottles of wine, liquor made of ginseng and Pyongyang soju, the official said. Moon initially hesitated, saying that conditions had to be right for a meeting.
Now, the stage is set for Mr. Kim not only to meet with South Korean President Moon Jae-in but also with Mr. Trump. And we won't get there with Trump because the administration "has not equipped itself for success".
World leaders welcomed prospects for a possible thaw in the Korea standoff including China, which is North Korea's largest trading partner and its sole major ally.
Kim, who had used his annual New Year's address to warn the United States of a supposed nuclear button on his desk, has an economy that's been battered by heavy global sanctions.
Trump is also dealing with fallout from a special counsel investigation of Russian election activities, as well as a lawsuit by a adult firm star who claims to have had an affair with him. He asked Trump to send his regards to Kim and his family.
He later amended that statement when tensions over North Korea's threats to bomb Guam did not break. There is no reason to believe that the position laid out by Kim Jong-un in his New Year's address has changed.
It said, "China will welcome the dialogue between the United States and North Korea, and resolutely support North Korea securing its due interests in the process of denuclearization".
While Kim ramped up his missile tests, the president responded by calling him "Little Rocket Man". He says he will "surely and definitely tame the mentally deranged U".
Mr Trump did not take it well.
Both leaders have interests in striking a big deal, said Cheong Seong-Chang, a senior analyst at South Korea's Sejong Institute.
But the state of Donald Trump's readiness for such a historic encounter is causing anxiety attacks in the Washington foreign policy establishment.
For decades, the Kim family has sought consistently and unsuccessfully to be recognized as the legitimate rulers of North Korea. "It is a hell that no person deserves". The experiences of Saddam Hussein and Muammar Gaddafi taught Kim a lesson: If you give up your weapons, eventually you'll wind up deposed and executed.
The White House said Trump had agreed to the encounter. "His tormentors wanted to know if he'd met any Christians". He offered to suspend nuclear and missile tests, and not just while dialogue is ongoing, as he had previously told South Korea. If the North uses those exercises - scheduled to resume after the Olympic Games suspension - as an excuse to resume testing then we can be sure that it is not honest in its offer to talk.
February 2018: Vice President Mike Pence attends the opening ceremony for the Winter Olympics in Pyeong Chang.