The chief of Seoul National University Hospital, Oh Byung-Hee, said Kim died there early today. He said Kim is believed to have suffered from a severe blood infection and acute heart failure before he died.
Kim was a major player in South Korea's rise to democracy. He opposed the country's military dictators for decades and laid the foundation for a peaceful power transfer as president.
He balked at the Clinton administration's idea of striking a North Korean nuclear complex in 1994. Kim feared a possible war.