Moon, who took office in May a year ago, said in late December that the 2015 agreement between the two countries over the "comfort women" victims can not resolve Japan's sex slavery of the Korean women.
South Korea's political parties showed mixed reactions Saturday to North Korean leader Kim Jong-un's proposal to hold an inter-Korean summit in Pyongyang at an early date.
The event was attended by North Korean ceremonial leader Kim Yong Nam, who accompanied Yo Jong to the Games.
Trump's administration has been adamant that North Korea must first freeze its military programs before talks can take place.
Even so, there's also cautious optimism, or curiosity at least. South Korea had to seek a special United Nations exemption for Choe to spend three days in the South. Choe and Kim Yo Jong also are under direct American sanctions for human-rights abuses related to their roles in censoring information in North Korea.
USA college student Otto Warmbier was captured in North Korea in 2016, authorities said for stealing a sign praising leader Kim Jong Un.
Many in Seoul, however, while interested in the warming high-level contacts, are also tempering expectations for a real breakthrough.
The march of athletes from the world's many nations saw them girded against a frigid Korean night with temperatures that dipped below freezing and biting winds.
"I think, in the United States of America, just as in France - where the president was impressed on Bastille Day - we can celebrate our troops, not in any way ever be associated with the provocations of the North".
South Korean participants included senior officials Jeong Eui-yong, Jo Myong-gyoon and Im Jong-suk - the chief Presidential Secretary.
After the threats, missile launches and general nastiness from the North over the previous year, there is still a lot of anger, fear and scepticism in the South.
Kim Yo Jong would be the first member of the Kim family to cross the border to the South.
They were seated not far from a section of North Korean cheerleaders who are attending the Olympics in a sign of warming ties between the two Koreas that Pence and other US officials have warned against.
On the eve of the opening ceremony, the North carried out a massive military parade in Pyongyang to mark the 70th anniversary of the foundation of the Korean People's Army and demonstrated what appeared to be ICBMs.
South Korea's Yonhap news agency reported that servers were shut down to prevent damage to technical systems, causing problems with the Pyeongchang Olympic website. Warmbier is set to attend the opening ceremony on Friday as a guest of the vice president. He also said the ceremonies were not the appropriate venue for serious talks.
"We didn't realize the magnitude of it", Murray said.