Recourse has been had to visionary ideas, such as setting up a European Secret Service, which could perhaps be considered in the distant future, but certainly does not address the real threat.
On esitetty visionäärisiä ideoita, kuten eurooppalaisen salaisen palvelun perustamista, jota ehkä voitaisiin harkita tulevaisuudessa mutta jolla ei todellakaan voida puuttua todelliseen uhkaan.