Counterintelligence failures highest counter-intelligence officers, with severe effects on morale. Peter Wright, while later extremely controversial about revelations his 1987 book, "Spycatcher: The Candid Autobiography of a Senior Intelligence Officer", also developed techniques that allowed the UK to track numerous Soviet clandestine agents, and agents under diplomatic cover . James Jesus Angleton, the legendary CIA director of counterespionage and a poet himself, used T. S. Eliot's term "an infinity of mirrors" to describe the intricacies of agent to double agent to triple agent so common in counterespionage, with works describing him as paranoid, while others described him as brilliant. Perhaps the truth
The Black Book of Communism by Joachim Gauck. The introduction was written by Courtois. Historian François Furet was originally slated to write the introduction, but was prevented from doing so by his death. The book has been translated into numerous languages, sold millions of copies and is considered one of the most influential, although one of the most controversial, books written about communism. The book's title was chosen to echo the Jewish Anti-Fascist Committee's "Black Book", a documentary record of Nazi atrocities by Ilya Ehrenburg and Vasily Grossman. In the first chapter of the book entitled "Introduction: The Crimes of Communism", Stéphane Courtois states that