Kim Yong Chol, vice-chairman of the North Korean Workers' Party's Central Committee, will lead a high-level delegation at the Winter Olympics closing ceremony in Pyeongchang on Sunday. The delegation will also have a meeting with President Moon Jae-in. Kim Yong Chol previously headed the Reconnaissance General Bureau, a key North Korean military intelligence agency, which South Korea accused of causing the 2010 sinking of the Cheonan, a South Korean navy corvette. North Korea has denied any involvement in the incident. The South Korean Unification Ministry's Baik Tae-hyun said in a media briefing on Friday that, despite the challenging circumstances, the focus should be on the potential for peace on the Korean peninsula and better inter-Korean relations through dialogue with the visiting North Korean officials, rather than their past actions or identities. Kim's visit will coincide with Ivanka Trump's visit to South Korea, who is attending a dinner with Moon and the Winter Olympics closing ceremony. The Blue House stated that there are no official meetings planned between U.S. and North Korean officials. South Korea's decision to allow Kim, who is under sanctions by the United States and South Korea, to cross the border has caused protests from the families of the deceased Cheonan sailors and opposition parties. The main opposition Liberty Korea Party staged a protest in front of the Blue House, demanding the government reverse its decision. The party called President Moon's acceptance of North Korea's peace efforts a serious issue and a historical crime. A group of relatives of the victims of the Cheonan sinking has announced plans to hold a press conference on Saturday to express their disagreement with the decision. Despite acknowledging the public's unease about Kim's upcoming visit, Baik emphasized that South Korea's belief that North Korea was responsible for the Cheonan sinking remains unchanged. Baik emphasized the importance of working towards establishing genuine peace on the Korean peninsula to prevent similar incidents from happening in the future. North Korean leader Kim Jong Un has expressed his desire to improve relations with South Korea, while the United States has emphasized the need to increase pressure on North Korea to abandon its nuclear weapons. North Korea conducted numerous missile launches and its largest nuclear test last year in violation of United Nations sanctions. It has been over two months since the last missile test was conducted in late November.