NATO allies reportedly foil Russian subsea cable sabotage plot

Deep in Arctic waters near the remote Svalbard archipelago this spring, NATO allies caught Russian subs training to unleash a secret weapon designed to disable critical undersea cables without leaving any fingerprints, Reuters reported, citing two Western officials.

The clandestine Russian operation, described to Reuters by the two officials, was carried out by Moscow's GUGI undersea warfare directorate, which used deep-sea submersibles to simulate the deployment of the sophisticated and destructive technology.

A joint operation involving Britain, Norway and the United States tracked and confronted the Russian vessels at sea, said the two officials, speaking ​on condition of anonymity. The vessels were prevented from completing their exercise and eventually left the area.

Britain and Norway disclosed in April that they had uncovered a covert Russian operation in Arctic waters. But the discovery of the new weapon, the ‌location of the operation and the U.S. involvement have not been reported.

The deep-sea face-off comes at a time when some Western intelligence officials fear the Kremlin is ramping up sabotage operations in Europe and preparing for a conflict with NATO.

Some U.S. intelligence analysts are increasingly concerned Russia may test NATO's mutual defense pact, known as Article 5, three U.S. officials said. If it does, destroying subsea cables could be a critical part of that effort, the Western officials said.

Cables no thicker than a garden hose, lying on the seabed or buried just below, are critical to global internet connectivity and financial transactions. Their economic and strategic importance has made them targets in past conflicts, including ​in the First and Second World Wars, when they were critical to delivering orders by telegraph or telephone.

Two 1,400 km subsea fiber-optic cables linking Svalbard to mainland Norway lie as deep as 2,700 meters below the sea's surface. They carry vast amounts of satellite ​data downloaded at the SvalSat satellite ground station, the world's largest and part of NASA's Near Space Network.

Russia's Defense Ministry didn't respond to a Reuters request for comment on the incident.