Russian research vessel "Admiral Vladimirsky" travels through Swedish naval training areas. As the TV crew approaches the ship between Sweden and Denmark, they are met by masked men with automatic weapons.

Uppdrag granskning and SVT Nyheter can now reveal Russia's secret operations in Nordic waters. Through a Russian military program, critical infrastructure such as submarine cables and wind farms are being secretly mapped in the Nordic countries. With the help of data analyses, intercepted radio communications and intelligence sources, 50 suspected Russian spy vessels have been identified.