Fun fact: Fail Safe was released the same year as Dr. Strangelove by the same studio. Directed by Sidney Lumet, it’s also about nuclear war. It’s a fine movie in its own right. From the Wikipedia:

> Fail Safe so closely resembled Peter George's novel Red Alert, on which Dr. Strangelove was based, that Dr. Strangelove screenwriter/director Stanley Kubrick and George filed a copyright infringement lawsuit. The case was settled out of court. The result of the settlement was that Columbia Pictures, which had financed and was distributing Dr. Strangelove, also bought Fail Safe, which had been an independently financed production. Kubrick insisted that the studio release his movie first.