Despite the mutual chilliness between USA and North Korean officials in South Korea last week, behind the scenes real progress was made toward a new diplomatic opening that could result in direct talks without preconditions between Washington and Pyongyang.
Kim Yo-jong and the North's honorary president, Kim Yong-nam, who officially led the delegation, were seen sitting next to the South Korean president on Sunday during the North Korean Samjiyon Orchestra's second concert at the National Theatre of Korea in Seoul.
The prospect of talks comes after months of tension between Pyongyang, Seoul and Washington over North Korea's pursuit of nuclear weapons, with President Donald Trump and North Korean leader Kim Jong Un trading insults and threats amid tightening sanctions from the United Nations.
North Korean athletes are making history at the Olympic games - competing under one flag with the South. Moon would irritate Trump if he accepts the invitation, while declining would make the US and South Korea appear "unreasonably bellicose", he said.
"Even if somebody meant to flee, one must realise that all have their families and relatives in North Korea who would suffer the consequences of such an escape", she added.
Even Japanese Prime Minister Shinzo Abe, who has shared the American skepticism of warming inter-Korean relations and pressed Moon against falling for the North's "smile diplomacy", greeted Kim Yong Nam. The North is just beyond those blue buildings there.
"Kim Jong Un moved away from the original negative stance on the inter-Korean summit and change his stance of holding the summit without conditions", said Cheong.
"The grievances that the world has about North Korea are very legitimate".
"President Moon must balance his desire for North-South reconciliation with his policy of denuclearization", Manning said. She also asked him to play a "leading role" in reuniting the two Koreas after almost seven decades. We're less than an hours drive from Seoul.
Pence had traveled to the Olympics to counter what Washington said was the North's crude attempts to hijack the Games with a propaganda campaign. North Korea has jumped at the opportunity.
Last year, North Korea conducted dozens of missile launches and its sixth and largest nuclear test in defiance of U.N. Security Council resolutions as it pursues its goal of developing a nuclear-armed missile capable of reaching the United States.