Vice President Pence, who will lead the USA delegation at the opening ceremony of the Winter Olympics in Pyeongchang on Friday, says he is prepared to announce the "toughest" economic sanctions yet on North Korea. It also banned the export of industrial equipment, machinery, transportation vehicles and industrial metals to North Korea, and required countries now hosting North Korean migrant workers to repatriate them within 24 months. Some analysts say she's a crucial part of the Kim regime, helping shape North Korean strategic policy as part of her brother's executive office.
"We will continue to isolate North Korea until it abandons its nuclear and ballistic missile programs once and for all", he said.
It's unclear whether any member of the North Korean government delegation will hold talks with USA officials during the Olympics.
While South Korea prepared to welcome Kim Yo Jong, Vice President Mike Pence said in Japan that the U.S.is preparing to announce the "toughest and most aggressive" economic sanctions against North Korea, boosting pressure on its government during the Olympics.
Kim's delegation includes Hyon Song Wol, the lead singer of Kim Jong Un's favorite girl band, whose every move was followed by a insatiable South Korean press during a pre-Games tour last month.
Sanctions passed by the United Nations in December previous year cut exports of gasoline, diesel and other refined oil products to North Korea by a total of 89%.
Jong-il fathered both Jong-un and Yo-jong with his third partner, former dancer Ko Yong-hui.
Washington is taking a much tougher line on the North than its allies in Seoul, exposing tensions that South Korean President Moon Jae-in could struggle to hide at the Olympics.
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By sending a relative, "Kim Jong Un may be trying to present himself as an equal to Donald Trump", Hong said.
Hundreds of North Koreans have arrived in South Korea ahead of the Opening Ceremony on Friday.
That's the question facing South Korean President Moon Jae-in with less than 48 hours to go before the opening ceremony of the Pyeongchang Winter Olympics.
The U.S. mission to the United Nations was not immediately available for comment on the South Korean U.N. request.
"North Korea can have a better future than the militaristic path and the path of provocation and confrontation that it's on", he said.
On Wednesday, 280 North Koreans, including four officials, 229 cheerleaders, 26 members of a Taekwondo demonstration team and 21 reporters arrived in the South by land, joining 73 others, including 22 athletes already in the country.
Another North Korean soldier defected across the border in December, and South Korean border guards fired warning shots along the DMZ at an apparent North Korean search party.
Pyeongchang's opening ceremonies will be attended by North Korea's ceremonial leader, Kim Yong Nam, as well as Kim Yo Jong, the influential sister of leader Kim Jong Un, according to NPR's Elise Hu, who is reporting from Tokyo. He urged countries "not to be lured by the charm offensive of North Korea", adding that the U.S. and Japan are "100 percent on the same page" on North Korean policy.