🌐EnglishEnglishDeutschItalianoNederlands中文日本語EntityQ668960· pop 5· linked from 12 articlesOperation Silveroperation in Allied-occupied Austria which ran from 1949 to 1955 that covertly tapped into the landline communications of the Soviet Army headquarters in ViennaAvailable in 5 languagesDeutsch日本語ItalianoGreekvia Wikidata sitelinks · CC0ConnectionsAustriaCountryLondonCityCategoriesAustria articles missing geocoordinate dataClandestine operationsCold War history of the United KingdomSoviet Union–United Kingdom relationsTunnels in AustriaUnited Kingdom intelligence operations