Bilgi :SEOUL, Nov. 18 (Yonhap) -- Double Agents are not uncommon in the complex web of international espionage but little has been known about a Korean man who worked for both Japanese and U.S. intelligence during World War II.
Haan Kil-soo worked as an intelligence officer at the Japanese consulate in Hawaii but also spied for the United States. Historians say that his warnings about Japan's impending attack on Pearl Harbor were ignored.