Britain, Norway, and other countries carried out a more than month-long operation in recent weeks to track Russian submarines operating near undersea cables in the North Atlantic, U.K. Defense Secretary John Healey said Thursday.
Healey said a Royal Navy frigate, aircraft, and hundreds of personnel tracked a Russian attack submarine and two vessels Britain described as spy submarines north of the U.K. He said the Russian vessels later left the area.
The U.K. said other allies took part but did not name them.
NATO countries have repeatedly raised concerns that Russia could use specialized vessels to sabotage underwater cables that carry global communications. Russia has rejected those allegations.
Healey said the activity took place in the U.K.’s exclusive economic zone, which extends 200 nautical miles from shore, but not in British territorial waters.
His message to Russian President Vladimir Putin was “we see your activity over our cables and our pipelines and you should know that any attempt to damage them will not be tolerated and will have serious consequences.”
Norwegian Defense Minister Tore Sandvik said in a statement that the Russian operation took place in and near Norwegian and British maritime areas in recent weeks.
Norway and the U.K. said the activity was coordinated by Russia’s Main Directorate of Deep Sea Research, known as GUGI, part of the Russian armed forces. Norway’s Defense Ministry said the operation showed Russia was continuing to develop its ability to map and potentially sabotage Western underwater infrastructure.
Healey said the submarines are “designed to survey underwater infrastructure during peacetime and sabotage it in conflict.”
In November, Britain said it was prepared to respond to any Russian incursion into its territory after the vessel Yantar was detected on the edge of U.K. waters north of Scotland.
Healey said Russia remained the main threat to the U.K. and its allies despite global attention on conflict in the Middle East.
“Putin would want us to be distracted by the Middle East,” Healey told a news conference. “We will not take our eyes off Putin.”