Career
Worked in Moscow in the 1st Chief Directorate of the Committee for State Security, also in Poland and East Germany. In 1961, defected to the CIA in Helsinki. Responsible for exposing many Soviet moles including Philby, Blunt, Blake and Vassall.
Received by Robert Kennedy. Recognized as an expert on Committee for State Security operations. American citizen, 1963.
Commanded respect among some senior officers in the counter-intelligence branches of the American CIA and the British MI5 and MI6. In 1984, Bodley Head, London, published his memoirs, New Lies for Old.