In Empire of Terror Mark D. Silinsky argues that Iran is one of the United States’ deadliest enemies. The Islamic Revolutionary Guard Corps, known as the Guards, bring Iran’s sway over much of the greater Middle East and pose a growing existential threat to Western security. Providing insights gained from his thirty-eight years as an analyst in the U.S. defense intelligence community, Silinsky argues that Iran’s political leaders and Guards are animated by aggressive, unforgiving, and totalitarian principles. He draws historical parallels to the Soviet Union and Nazi Germany to compare the intelligence and security services of states with totalitarian aspirations and to illustrate ideological points of intersection—a collectivist mindset, intolerance for political deviation, strongly defined sex roles and hypermasculinity, and a ruthless determination to ferret out and destroy their enemies. Silinsky offers biographies and explanations of the ideology that propels some of Iran’s leaders, with global implications. Profiling the perpetrators, victims, heroes, villains, and dupes, Silinsky shines light on the human and inhumane elements in this distinctly Iranian drama. Although the Soviet Union and Nazi Germany have been defeated and belong to history, the Iranian threat is very much alive.