Donald Trump, Kim Jong Un impersonators escorted from Olympic Opening Ceremonies

North Korean athletes look on during the welcoming ceremony ahead of the Pyeong Chang 2018 Winter Olympic Games

On Saturday Kim Yo Jong "courteously" handed over a personal letter from the North Korean leader to Moon and told him of her brother's "intention", North Korea's state news agency KCNA said, without elaborating what that was.

In an interview with NBC, U.S. Vice President Mike Pence said Washington will continue to put all the pressure to bear on North Korea economically and diplomatically, while preserving all of its military options to see that that happens.

Moon shared details with Pence of his meeting with North Korean leaders, but did not talk about the invitation to talks in Pyongyang.

Pence is leading the USA delegation to the opening ceremonies, where he has worked to pour cold water on warming ties between the two Koreas.

The unified women's ice hockey team is the first time the two Koreas will compete on the same side for 27 years, and comes after their athletes marched together behind a unification flag at Friday's opening ceremony.

The two Koreas, which remain technically at war, have cycled through countless periods of chill and thaw since their division 70 years ago.

Loud applause greeted the appearance of Moon, Kim Yo Jong and her delegation at the concert, attended by more than a thousand people.

Moon's office said he told Abe that the talks between the Koreas would not disrupt global efforts to deal with North Korea's nuclear program.

Responding to Mr. Moon's optimism about where the North's Olympic participation might lead, Pence, once again, defined the conditions required for the engage in dialogue with Kim Jong Un.

Kim Yong Nam, president of the Presidium of the Supreme People's Assembly of the Democratic People's Republic of Korea, arrived in PyeongChang earlier in the day with the DPRK delegation.

The story described how Kim Yo Jong attended the opening days of the Pyeongchang Games in South Korea as the representative for her dictator brother's regime in the North.

Kim Jong Un has invited Moon to visit Pyongyang, the presidential Blue House said.

Speaking on his way home from the Winter Olympics in South Korea, Mr Pence said there was "no daylight" between the two allies on the issue. It's clear both sides decided it was not in their interest to go along with Moon's wishes at this time.

Yet last month the North agreed with South Korea to send 22 athletes and a 230-strong "cheering squad" to Pyeongchang.

Pence spokeswoman Alyssa Farah says Pence visited with guests at several tables at Friday's reception, "but did not come across the North Korean delegation".

President Trump's right-hand man was at the Gangneung Ice Arena on Saturday night to watch the opening session of short-track speedskating and, for the second evening in succession, he was unable to avoid a connection to North Korea.

In a January interview with Reuters, U.S. President Donald Trump said North Korea is close to having the capability to deliver a nuclear-tipped missile to the United States, and vowed to prevent that.

Diplomacy and sports have mixed in an unprecedented way, as a historic visit made by Kim Jong-un's younger sister has paved the way for hope to better relations between the two Koreas.