NATO Allies Disrupt Russian Subsea Cable Sabotage Exercise

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.

The clandestine Russian operation, described to Reuters by two Western 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 defence pact, known as Article 5, three U.S. officials said. If it does, destroying subsea cables