The Bomb

Klaus Fuchs: 8. The uncertainty principle

Aug 26, 2022
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ANECDOTE

Surveillance Revealed Private Life, Not Guilt

  • MI5 bugged Klaus Fuchs's home, telephone and mail and recorded intimate moments including his affair with Ernest Skinner.
  • Surveillance yielded personal details but not the espionage evidence MI5 desperately needed.
INSIGHT

Secrecy Of Venona Handicapped Prosecutions

  • The Venona decrypts exposed Soviet penetration but remained too sensitive for courtroom use.
  • That secrecy forced MI5 to catch Fuchs 'red handed' or secure a confession instead of using Venona directly.
INSIGHT

Uranium Gave Britain Diplomatic Leverage

  • Postwar US restrictions cut Britain out of atomic cooperation, creating deep tensions with allies.
  • Britain used its uranium stockpile as leverage to restore scientific and political collaboration with the US.
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