Dr. Strangelove, often considered the magnum opus of director Stanley Kubrick, is one of the all-time leading examples of dark satire in film. Through this satire the film demonstrates the absurdly terrifying nature of Cold War politics, and, though it originally contained some more ridiculous scenes (the film was supposed to end in a pie fight), the final product uses a series of unlikely (but possible) events to address this situation in a cold, precise manner.
The magic about Dr. Strangelove is its ability to thread the needle of humor and fear. It establishes the terror felt by everyone from top officials to civilians, and the situations that led to this fear, including why it seemed reasonable at the time. But, it presents these ideas with enough humor to remain enjoyable to an audience. By doing both at the same time, it avoids both mocking a serious situation and becoming a boring history lesson.
Because of its sophistication, I highly recommend this movie to anyone with an interest in humor or in history, and ideally, in both. It is an absolute masterclass in dark satire, and serves as one of the best examples of the genre to date. Personally, I rate it an easy five stars.