In this photo, Younghwa Chun (left) and Euni Cho celebrate the opening of Sweet Studio Dal D patisserie in Seoul, South Korea, in 2017. Chun was a toddler when her family fled North Korea, and doesn't have memories of life there. Courtesy of Euni Cho hide caption

North Korean leader Kim Jong Un (left) and South Korean President Moon Jae-in embrace after signing the Panmunjom Declaration for Peace, Prosperity and Unification of the Korean Peninsula during the Inter-Korean Summit on Friday. NurPhoto via Getty Images hide caption

A woman walks past a news screen showing file footage of South Korean President Moon Jae-in and North Korean leader Kim Jong Un at a railway station in Seoul this week. Kim will walk across the Demilitarized Zone on Friday for a historic summit with Moon. Jung Yeon-Je/AFP/Getty Images hide caption