Cold War intelligence defectors (WEST 2007)

Nigel West, Cold War intelligence defectors - Loch Johnson (ed.), Handbook of intelligence studies, Routledge, 2007

 

 (230) While the Czech, Romanian, Bulgarian, Cuban, East German and Polish services proved resilient to penetration by western agencies, they all suffered from very damaging defections.

 

(233) In fact, although the KGB is known to have traced Igor Gouzenko, Vladimir Petrov, Alexander Orlov and made considerable efforts to find Oleg Lyalin, the only intelligence defectors to have been the victims of a deliberate attempt on their lives were Nikolai Khokhlov and the Bulgarian defector Vladimir Kostov, and both survived the experience.