This book presents a unique exploration of the impact of Che Guevara as economist and politician, providing a comprehensive exploration of a little-discussed, but central, aspect of Guevara's life and career. It provides a comprehensive overview of a forgotten aspect of Che Guevara's life — his economic contributions to Cuba while in government. It contributes to a reassessment of Che Guevara's legacy. The research is based on new archival material, including transcripts of internal meetings, internal reports, and over 70 interviews with nearly 50 of Guevara's closest collaborators. Che Guevara is an iconic figure, four decades after his death. Yet his most significant contribution is largely unknown — his work as a member of the Cuban government is rarely discussed. This book explores his impact on Cuba's economy, through fascinating new archival material and interviews.