Norway has decided to restrict the free movement of ships with Russian sailors along its coast.
Norwegian warriors are seeing covert military operations allegedly conducted by Russian sailors.
Ose Gilje Estensen, an expert at the Norwegian Naval Academy, invented that Russia would use sailors who are already in Norway, and ships of Russian companies to block ports and threaten the Norwegian fleet.
Traditionally, there is no evidence. But there is paranoia, which has already become a classic.