FILE - Park Sang-hak, center, a refugee from the North who runs the group Fighters for a Free North Korea from a small Seoul office, and South Korean conservative activists prepare to release balloons bearing leaflets condemning the North Korean leader during an anti-North Korea rally against the 99th anniversary of Kim Il Sung's birth, called "The Day of the Sun," at the Imjingak Pavilion near the border village of Panmunjom in Paju, South Korea, on April 15, 2011. The balloons read "Overthrow Kim Jong Il's dictatorship." South Koreans were alert Friday, June 7, 2024 for possible new launches by North Korea of balloons carrying rubbish into the South, a day after Seoul activists flew their own balloons to scatter political leaflets in the North. (AP Photo/Lee Jin-man, File)