During the Cold War, the U.S. Navy secretly tapped Soviet undersea communication cables in a mission called Operation Ivy Bells. For nearly 9 years, divers risked their lives in Soviet waters, collecting intelligence that shaped nuclear disarmament — until the operation was betrayed in the 1980s.
Much of the story remained classified for decades, making it one of the lesser-known episodes of Cold War history.
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by No_Money_9404