Introduction; Part I. The Philosophy of Self-Deception: 1. Investigating self-deception; 2. The attribution of responsibility to self-deceivers; Part II. Self-Deception in Politics: 3. The self-deception of political leaders, officials, and governments; 4. Kennedy and Cuba; 5. Johnson and the Gulf of Tonkin Resolution; 6. Bush and the WMD; Conclusions.