Kim and Ryom were the only athletes to compete under their country's flag; North Korea's hockey players are competing as part of a unified Korean team.
The United States has appeared to endorse deeper post-Olympics engagement between South and North Korea that could lead to direct USA talks, but has agreed with Seoul that sanctions must be intensified to push Pyongyang to give up its nuclear weapons.
Hwang Won, the father of activist Hwang In-cheol, remains trapped in the secretive regime for more than four decades, along with more than 500 South Korean abductees.
"The US also sees inter-Korean dialogue positively and expressed willingness to have dialogue with the North", Moon said, according to his office. They are all young, in their early 20s. "Even the hair is identical", said Ha Tae-kyung of the minor opposition Bareun Party.
South Korea covers $2.6M bill for North's Olympic delegation
Attention was also lavished on an army of handsome North Korean cheerleaders, which included the dictator's wife, Ri Sol-ju. North Korea has continued the tests and the USA has responded by asking the United Nations to impose ever-harsher economic sanctions.
Their presence is proving divisive in the USA, however, with accusations that Pyongyang is implementing a "choreographed" propaganda weapon as a kind of distracting charm offensive.
A former South Korean diplomat, Kim Seok-woo said the abductions provide evidence of North Korea's systematic human rights violations that "involve members of the highest level of government". President Trump, who has dismissed engagement with North Korea as "appeasement", hasn't repudiated Mr. Pence's comments. Health issues could also affect his ability to preside at a possible summit with South Korean President Moon Jae-in in Pyongyang.More news: Florida school shooting: US President Donal Trump prays for victims
North Korean leader Kim Jong-un said he wants to boost the "warm climate of reconciliation and dialogue" with South Korea after a high-level delegation returned from the Winter Olympics, while his foes stressed the need to intensify pressure to force him to give up his nuclear weapons.
The cheerleaders must also eat at the hotel next door, a two-minute walk away from their accommodation, in staggered groups of about 30 people accompanied by their chaperones.
South Korean Unification Minister Cho Myoung-gyon stated that the North's participation in the Games offered opportunities for establishing peace on the Korean peninsula.
He says another image - a still of an official video of Kim from Wednesday - shows the leader giving a speech while firmly grasping the lectern with the facial expression of an unwell person.More news: Who is Nikolas Cruz, accused gunman in Florida high school attack?
"Some of them laughed, and got it, but majority were totally shocked and I was told to sit down by a few heavies", Howard said.
Meanwhile, the government is being criticized for failing to make proper preparations or giving overly special treatment to the North Korean visitors.
There have been months of unease and unpleasantries exchanged, all involving Pyongyang, Seoul and Washington regarding North Korea's nuclear and missile programs.More news: Crop loss: Maharashtra seeks ₹200-cr relief from Centre