Ryan places Guevara's Bolivian adventure in an historical context that gives it hemispheric significance. As a case study of the US's Latin American counterinsurgency efforts in the 1960s, it demonstrates that the mistakes made in Vietnam were not repeated everywhere. Ryan also attacks some widely held assumptions, including Guevara's diminished ties with Cuba and CIA involvement in his eventual execution. Although objective at all times, this is "history with a heart". Key characters, such as Guevara himself, are brought to life by the author demonstrating not only his mistakes but his tremendous integrity, honor, and determination. A must-read for students of U.S.-Latin American relations during the Cold War.