Seoul:South Korea: On October 5, several significant events in Korean history occurred. In 1962, South Korea established diplomatic relations with Ecuador, marking a milestone in its foreign relations.

According to Yonhap News Agency, in 1978, South Korea adopted the "Nature Protection Charter," which included seven resolutions emphasizing the nation's commitment to environmental preservation through education and responsibility.

In 1986, the 10th Asian Games concluded with a closing ceremony in Seoul. Later, in 2009, Chinese Premier Wen Jiabao visited North Korea, meeting leader Kim Jong-il. Concerns arose in South Korea regarding the economic agreements between China and North Korea, fearing they might impact U.N. sanctions against the North.

In 2013, South Korean and U.S. officials engaged in talks but could not agree on the cost-sharing arrangement for maintaining American troops in South Korea.

In 2018, Unification Minister Cho Myoung-gyon met with his North Korean counterpart, Ri Son-gwon, in Pyongyang during a joint event celebrating the 11th anniversary of the 2007 inter-Korean summit.

In 2019, the United States and North Korea resumed working-level nuclear discussions in Sweden after a break of several months. This marked their first formal negotiation since the February summit in Hanoi between U.S. President Donald Trump and North Korean leader Kim Jong-un concluded without an agreement.