Mr. Moon hasn't decided on whether or when to visit the North.
In North Korea's dynastic system, which upholds the Kim family's "bloodline" as a sacred leadership qualification, Kim Yo Jong wields a singular clout that can not be matched by any non-relative members of the elite, according to North Korea analysts.
"I leave here very confident that we are going to continue to do the things we've known have to be done to continue to pressure North Korea to abandon their nuclear ambitions".
There is worry too that the proposed summit Pyongyang may come with preconditions - a North Korean speciality.
"North Korea is not a victim - they are terrorists", Warmbier said in September.
"And Dennis Rodman has confirmed this and he's met both of them personally", he added, referring to the former National Basketball Association player who has met with Kim multiple times.
Why most Wolves fans do not want West Brom to go down
To do this we must have personality to play with the ball. "We are facing a serious situation". "Now, it's different. In January, Chelsea signed Ross Barkley from Everton, Emerson Palmieri from Roma and Olivier Giroud from Arsenal .
But the North was welcomed with open arms to what South Korean President Moon Jae-in called "Olympic games of peace".
She is reportedly the first member of Jong-Un's family to travel South across the border since the Korean War.
Moon responded by saying: 'Let us make it happen by creating the necessary conditions in the future'.
Pence had told Seoul in advance that he would be dining with United States athletes soon afterwards "so his seat was not prepared accordingly", the spokesman said.
US Vice President Mike Pence snubbed the lunch and avoided any interaction with Ms Kim when they sat just feet apart at the spectacular opening ceremony.
North Korean dictator Kim Jong Un is sending two competitors: his head of state, Kim Yong Nam and, more significantly, his sister, Kim Yo Jong, the first vice director of the Central Committee of the Workers' Party.
USA officials have not ruled out the possibility that the vice president might meet a North Korean official at the Olympics.