Sunshine Policy
In May 2017 Moon Jae-in was elected President of South Korea with a promise to return to the Sunshine Policy. In his New Year address for 2018, North Korean leader Kim Jong-un proposed sending a delegation to the upcoming Winter Olympics in South Korea. The Seoul–Pyongyang hotline was reopened after almost two years. At the Winter Olympics, North and South Korea marched together in the opening ceremony and fielded a united women's ice hockey team. As well as the athletes, North Korea sent an unprecedented high-level delegation, headed by Kim Yo-jong, sister of Kim Jong-un, and President Kim Yong-nam, and including performers like the Samjiyon Orchestra. The delegation passed on an invitation to President Moon to visit North Korea. On 1 April, South Korean K-pop stars performed a concert in Pyongyang entitled "Spring is Coming", which was attended by Kim Jong-un and his wife. 
On 27 April, a summit took place between Moon and Kim in the South Korean side of the Joint Security Area. The summit ended with both countries pledging to work towards complete denuclearization of the Korean Peninsula. They also vowed to declare an official end to the Korean War within a year. As part of the Panmunjom Declaration which was signed by leaders of both countries, both sides also called for the end of longstanding military activities in the region of the Korean border and a reunification of Korea. Also, the leaders agreed to work together to connect and modernise their railways.
April 2018 inter-Korean summit
On 26 May, Kim and Moon met again in the Joint Security Area, this time on the North Korean side of the Panmunjom village. The meeting took two hours, and unlike other summits it had not been publicly announced beforehand. Photos released by South Korea's presidential office showed Moon arriving at the northern side of the Panmunjom truce village and shaking hands with Kim's sister, Kim Yo-jong, before sitting down with Kim for their summit. Moon was accompanied by his spy chief, Suh Hoon, while Kim was joined by Kim Yong-chol, a former military intelligence chief who is now a vice chairman of the North Korean ruling party's central committee tasked with inter-Korean relations. The meeting was largely centered around North Korean leader Kim Jong Un's upcoming summit with US President Donald Trump. Kim and Moon also embraced before Moon returned to South Korea. Moon revealed details of the summit in a public address on 27 May.