 However, during the late 1970s the relationship with Pyongyang became slightly stronger than that with Seoul, as Ne Win and the Burma Socialist Programme Party forged fraternal ties with Kim Il-sung and the Workers' Party of Korea.The bilateral relationship with North Korea dramatically collapsed in 1983, after Pyongyang allegedly sent three agents to Yangon to assassinate South Korean President Chun Doo Hwan, who was making a state visit to Burma.Due to a last minute, unannounced change to his schedule Chun survived the massive bomb attack at the Martyrs' Mausoleum, but 17 South Korean and four Burmese officials, including four Korean Cabinet ministers, were killed.