10 Audacious American Secret Operations During The Cold War
10 Digging A Tunnel To Spy On The East Germans In 1951, the CIA was losing out on valuable intelligence because the Soviets were switching to landlines to send messages to the East Germans. Landline messages could not be intercepted unless they were physically tapped, unlike the radio communications previously used by the Soviets. To fix the problem, the CIA decided to dig a tunnel under the border to East Berlin to physically tap into a cable that carried messages from Moscow to East Berlin....