The breaking of the Zimmerman telegram and the entry of the United States into the First World War. The interception of Soviet communications in the 1920s and the police raid against the Russian Trade Delegation.
Susanna Schrafsetter Libri
Includes information about: H bomb, Cambridge Spies, Protect and Survive (leaflet issued in 1963 and 1980 on how to survive a nuclear attack), Fall of the Berlin Wall, Glasnost.
