There are growing concerns the cyber-attack was Russian in origin, and was a response to the fact the Russian Olympic committee was banned from the games in December - along with almost 200 Russian athletes - because of state-sponsored doping at the games in Sochi in 2014. But privately, officials said, Pence expressed concern to Moon about his more conciliatory tone toward North Korea.
But Moon has also said that he would be willing to meet Kim only if he received assurances from the North that it would help resolve the crisis over the North's nuclear weapons program. NBC tweeted on its official @NBCOlympics page: "A swarm of drones brings us one of the most incredible sights of the #OpeningCeremony".
"We are taking secure operations and, in line with best practice, we're not going to comment on the issue because it is an issue that we are dealing with", he said.
In South Korea and beyond, commentators are taken with Kim's surprisingly stylish and relaxed demeanor.
Officials have anxious about such attacks coming from North Korea amidst political tensions with South Korea, and Russian Federation following the country's ban from the games due to a systematic doping scheme.
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Police Scotland said they spoke to a number of potential witnesses at Edinburgh Airport and "established that no crime has been committed".
Pence told reporters that the two leaders "spoke as friends" during his visit to South Korea, and their discussions including the meeting between Moon and the North Korean delegation, led by Kim Jong Un's sister, Kim Yo Jong. While South Korea hasn't suspended the joint military exercises, it has agreed to delay them this year.
At a VIP reception before the opening ceremony, Pence and Kim Yong Nam were in the same room, according to Jarrod Agen, his deputy chief of staff, but Pence "did not come across the North Korean delegation" at the event.
After months of tensions, the athletes from the two countries marched under the same flag in the parade ceremony.
Kim Yo Jong, 28, is the first member of the ruling Kim family bearing the bloodline of the sacred Mount Paektu, a centerpiece of the North's idolization and propaganda campaign, to cross the border into the South since the 1950-53 Korean War.
The joyous group flew their flag, which was white with the blue Korean peninsula in the middle.