Speaking to the Washington Post aboard Air Force Two on his way home from the Winter Olympics in South Korea, Mr. Pence who avoided any direct contact with North Korean officials attending the Games said Washington would keep up its maximum pressure campaign against Pyongyang but would be open to possible talks at the same time.
At the the Olympics' opening ceremony on Friday night, Kim Yo Jong sat behind Moon (and Pence) - but Saturday night, she and Kim Yong Nam sat next to Moon and IOC President Thomas Bach as they watched the unified Korean women's hockey team play their historic first game.
U.S. Defense Secretary Jim Mattis says it's too early to tell if any of the overtures between North and South Korea during the Olympic Games are creating a chance for peace on the Korean Peninsula.
North Korean leader Kim Jong Un's invitation to Mr Moon for a summit in Pyongyang has also left Tokyo anxious. They were whisked back and forth between Seoul and the Olympic towns of Pyeongchang and Gangneung. White House officials stressed that Pence had applauded only for the American team, but Asia experts said the vice-president's refusal to stand could be seen as disrespectful to the hosts.
Invited by Moon for lunch at Seoul's presidential palace, Kim Yo Jong verbally delivered her brother's hope for a summit with Moon in Pyongyang, a meeting that she said would help significantly improve ties after an extended period of animosity.
"The grievances that the world has about North Korea are very legitimate".
"For our side, for the sports side, this dialogue will continue.", he said, adding that the IOC was in constant dialogue with North Korea's national Olympic committee.
U.S. President Donald Trump and the North Korean leadership traded insults and threats of nuclear war as tensions rose, with Trump repeatedly dismissing the prospect or value of talks with North Korea.
While the Olympic's men's downhill skiing competition was postponed due to treacherous winds, nothing stopped the runners from taking part in their winter madness.
"It's not a complete disaster", said James Schoff, former senior Pentagon adviser for East Asia policy.
"All the parties concerned have welcomed this invitation to North Korea...", he said.
North Korean leader Kim Jong Un's sister comes home Sunday night after an eventful three days in South Korea, where she sat among some of the world's top-officials at the Olympics and made a diplomatic offer to the South meant to end seven decades of hostility.