After Fidel Castro's guerrilla war against dictator Fulgencio Batista triumphed on January 1, 1959, the Cuban Revolution came to be seen as a major watershed in Latin American history. The three decades following Castro's victory gradually marginalized Cuba from the Latin American mainstream. But, as long-time Cuba observer Thomas C. Wright shows, the Cuban Revolution owed its vast influence in Latin America to the fact that it embodied the aspirations...