The report notes that Russian spy ships, drones, satellites and human agents are engaged in an unprecedented effort to chart the energy and other “vital marine infrastructure” of the North Sea. The purpose of this effort is to understand how the energy and other key infrastructure works in the North Sea. The term North Sea refers to the maritime region that lies between France, Belgium, the Netherlands, Germany, Denmark, Norway and the United Kingdom. It hosts key energy infrastructure, including oil, natural gas, wind and wave power installations, which supply energy to much of northern Europe.

According to the report, Russian intelligence and espionage activities in the North Sea “indicate preparatory acts of disruption and sabotage. These appear to be aimed at energy systems, but also other vital infrastructure, such as undersea power and communication cables, and even drinking water facilities. Consequently, physical threats toward any and all of these facilities should be viewed as conceivable, the report warns.

On Saturday, the Dutch government said it would expel an undisclosed number (believed to be at least ten) of Russian diplomats. It also accused Moscow of engaging in constant efforts to staff its diplomat facilities in the Netherlands with undercover intelligence officers. On the same day, the Dutch government said it would shut down its consulate in Russia’s second-largest city, St. Petersburg, and ordered Russia to shut down its trade mission in the port city of Amsterdam.