An inter-Korean summit would be the third of its kind, after Kim's father and predecessor Kim Jong Il met the South's Kim Dae-jung and Roh Moo-hyun in 2000 and 2007 respectively, both of them in Pyongyang.
Seoul/Tokyo: North Korean leader Kim Jong Un invited South Korean President Moon Jae-in to meet in Pyongyang, a dramatic gesture that may raise prospects for easing tensions on the Korean Peninsula.
Team USA marched in matching flag-themed Ralph Lauren ensembles, complete with sturdy brown boots and fringed leather gloves.
Pence sat stone-faced in his seat as Moon and North Koreans officials stood together with much of the stadium to applaud their joint team of athletes.
On Saturday, Kim Yo Jong and other North Korean delegates will have lunch with Moon at the presidential Blue House.
Pence said he would seek to counter North Korea's attempt to use the Olympics for propaganda and invited the father of Otto Warmbier, an American student who died a year ago after being imprisoned in North Korea for 17 months, to the Games in Pyeongchang.
But the North was still welcomed with open arms to what South Korean President Moon Jae-in called "Olympic games of peace" and the USA appeared to be the one left out in the cold.
In South Korea for the start of the Winter Olympics Friday, U.S. Vice President Mike Pence met with defectors from North Korea - accompanied by the father of Otto Warmbier, an American who died after his release from captivity there past year.
The display of Korean unity at the Olympics opening drew widespread applause from the audience, including from Thomas Bach, the president of the International Olympic Committee.
The North Koreans, dressed in identical garb, cheered in careful coordination.
President Donald Trump has sought to maximize pressure on North Korea to pressure Kim into giving up his nuclear weapons, and his administration hasn't ruled out a preemptive attack.
It came after athletes from North and South Korea, who are still technically at war, marched under the unification flag to bring the athletes' parade to a close.
But North Korea has a habit of not letting itself be ignored when it comes to its southern rival.
Seamus O'Connor carries the flag of Ireland during the opening ceremony. South Korea's figure skating superstar and Olympic gold medalist Kim Yuna lit the Olympic cauldron.
The North Korean delegation will attend the opening ceremony of the Olympics on Friday, where Kim Yo-jong will be seated just metres from United States vice-president Mike Pence in what could be a tense atmosphere.
Moon provided Pence with a readout of the historic luncheon between the North and South.
Pence stood to welcome the United States athletes as the Korean pop hit Gangnam Style blared around the stadium, sparking the "Horse Dance" in the crowd and among the volunteers.
North Korean leader Kim Jong-un's sister has landed in the South, becoming the first member of Pyongyang's ruling dynasty to set foot in the rival country since the Korean war.
Cyber-security teams and experts from South Korea's defence ministry, plus four other ministries, formed part of a taskforce investigating the shutdown, they said, adding that it didn't affect the high-tech opening ceremony.
North Korea leader Kim Jong Un's sister shook hands with South Korean President Moon Jae-in - and appeared pleased - while they watched a show of light, sound, and human performance.
Several defectors shared their stories with the vice president, including Ji Seong-ho, who said reading the Bible helped her decide to flee from North Korea in 1998.
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