In this authentic and well-written analysis, the author (formerly a representative abroad of the Castro movement) attempts to explain " . . . how it was possible for an originally middle-class reform movement to be transformed by an unprincipled, charismatic leader and a handful of close associates into a full-fledged Marxist-Leninist revolution." Leading roles in this metamorphosis are attributed to the "unpremeditated and yet perhaps decisive" activity of radical liberals and intellectuals who had envisioned something entirely different.