A look at a global scramble to protect submarine cables vulnerable to potential sabotage, as new monitoring tech like distributed acoustic sensing is developed (Mike Cherney/Wall Street Journal)

Mike Cherney / Wall Street Journal : A look at a global scramble to protect submarine cables vulnerable to potential sabotage, as new monitoring tech like distributed acoustic sensing is developed —  U.S. and allies turn to tech, patrols and new routes to defend crucial underwater infrastructure against Russia and China

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