“Blind Man's Bluff: The Untold Story of American Submarine Espionage” - Sherry Sontag & Christopher Drew - Indirect, but the title is the summary. I recommend familiarizing yourself with Operation Ivy Bells.
Ivy Bells is arguably the Cold War’s signature known clandestine undersea cable tapping operation. Contextualizes lengths nations will go to for physical access. It is far easier to own a cable than use a nuclear powered sub to sneakily deploy a tap.
Ivy Bells is arguably the Cold War’s signature known clandestine undersea cable tapping operation. Contextualizes lengths nations will go to for physical access. It is far easier to own a cable than use a nuclear powered sub to sneakily deploy a tap.