The Islamic Revolutionary Guard Corps was founded in 1979 to protect a revolution. Within decades, it had become something far larger — a parallel state with its own military command, economic empire, intelligence apparatus, and foreign policy agenda. Today the IRGC controls an estimated third of Iran's economy, funds proxy forces across the Middle East, and holds veto power over domestic politics that no elected official can easily challenge. This book traces the IRGC's transformation from revolutionary militia to institutional superpower. It examines how the Guards accumulated economic assets through construction conglomerates, sanctions-busting networks, and state contracts — and how that wealth translated directly into political leverage. It follows their operational reach from Lebanon's Hezbollah to Iraq's Popular Mobilization Forces, showing how Tehran projects influence without conventional diplomacy. Drawing on financial records, defector testimony, and regional security analysis, this is a systematic study of how a single institution reshaped an entire state — and why understanding the IRGC is essential to understanding Iran's role in the twenty-first century.