Fail-Safe (1964)

Sidney Lumet's Fail-Safe was released in 1964, some months after Stanley Kubrick's Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb and it's basically the exact same story but treated with deadly seriousness rather than black comedy.

Lumet's movie is definitely the lesser of the two films but it is intriguing to compare it to Kubrick's masterpiece and it's worth seeing if you're fascinated by the Cold War.

Here's the link to my review of Fail-Safe.