Overview
- Western officials say Britain, Norway and the United States tracked and confronted Russian GUGI vessels near Svalbard and forced them to leave without any cables being damaged.
- Reuters and other reports say the Russian exercise, conducted by the Main Directorate for Deep‑Sea Research, used deep‑sea submersibles to rehearse a previously unreported system described as a secret weapon to disable cables without leaving obvious traces.
- The operation took place in April 2026 near two roughly 1,400 km fiber‑optic cables that link Svalbard to mainland Norway and run as deep as about 2,700 metres, carrying large volumes of satellite and internet traffic for SvalSat and other services.
- Allies have responded by widening patrols, intelligence sharing and monitoring programs such as NATO’s Baltic Sentry and the UK‑led Nordic Warden while Norway plans a new mainland cable by 2028 to reduce exposure.
- Officials warn the episode sharpens the strategic risk of attacks on subsea infrastructure because cutting cables could disrupt internet, satellite data and financial links and might be used to probe NATO’s collective‑defense response, so observers expect more surveillance and defensive measures to follow.