"The Fog of War" is a documentary film directed by Errol Morris that explores the complexities of war through the experiences of Robert S. McNamara, a former U.S. Secretary of Defense. The film presents a series of interviews with McNamara, highlighting his insights and reflections on key events during the Vietnam War and other military conflicts. The title refers to the uncertainty and confusion that often accompany warfare, making it difficult to understand the full scope of events. Through archival footage and McNamara's personal anecdotes, the film examines themes such as decision-making, morality, and the consequences of war.