
Historical Context During the Cold War, the United States sought to gain strategic intelligence on Soviet military capabilities, particularly regarding submarine and missile technologies. In the early 1970s, U.S. intelligence agencies discovered the existence of an undersea communications cable in the Sea of Okhotsk, connecting the Soviet Pacific Fleet’s base at Petropavlovsk on the Kamchatka
Continue reading Sigint: Operation Ivy Bells – Sea of Okhotsk, 1971–1981