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Russian Surveillance Devices Found in UK Waters, Raising Espionage Concerns

The UK investigates reports of Russian sensors and unmanned devices near nuclear submarines and undersea cables, while the Ministry of Defence calls the claims speculative.

Le HMS Astute de la Royal Navy britannique, base de Faslane, dans l’ouest de l’Écosse, le 20 novembre 2009.
En janvier dernier, la présence du Yantar, un navire appartenant à l’agence russe de recherche sous-marine, avait été signalée dans les eaux britanniques.
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Overview

  • Russian sensors and unmanned devices, suspected of espionage, have been discovered in British waters, including some washed ashore and others located by the Royal Navy.
  • Military officials believe the devices were installed to monitor the UK's four nuclear submarines and critical undersea communication cables.
  • The UK Ministry of Defence dismissed the findings as speculative, reaffirming the security of its nuclear deterrent, which has remained undetected for over five decades.
  • The discovery follows earlier concerns about Russian surveillance activities, including the presence of the ship Yantar in UK waters in January 2025 and suspected sabotage in the Baltic Sea.
  • UK Defence Minister John Healey has warned Russia of potential strong measures to protect British interests as tensions over hybrid warfare tactics escalate.