European Union and Swedish authorities are increasingly concerned about Russian property acquisitions, viewing them as a potential security threat. Experts warn that these purchases represent a subtle form of leverage that could circumvent NATO’s Article 5 collective defense clause. Current EU legislation is considered insufficient to address this emerging risk. Swedish Defense Minister Pål Jonson has acknowledged that property ownership by foreign entities can, in certain circumstances, pose a threat to national security. The concern centers on the potential for these properties to be used for intelligence gathering, sabotage, or other hostile activities. Authorities are now evaluating strategies to monitor and potentially restrict future Russian investment in strategic real estate. This issue highlights a growing awareness of non-military tactics employed to exert influence and undermine security within Europe.