This sweeping and meticulously documented study traces the rise of international communism from its ideological roots to the vast empire that dominated much of the twentieth century. Through the words and actions of its architects, it exposes the terror, famine, persecution, and calculated chaos that followed in its wake, while highlighting the prophetic warnings of Our Lady of Fátima and the heroic witness of Christians who suffered for their fidelity. Moving from revolutionary Russia to China and beyond, the narrative examines pivotal events and influential figures, as well as the spiritual and cultural forces that opposed them. Sobering yet ultimately hopeful, this work calls readers to vigilance in defending truth, faith, and authentic freedom in our own time.