Fail-Safe (1964), starring Henry Fonda and Walter Matthau and directed by Sidney Lumet, is a sober, serious film detailing how the United States and Soviet Union would negotiate during a nuclear crisis. After American planes are mistakenly launched to attack the USSR, the US and USSR both communicate and deliberate over how to stop the bombers from destroying Soviet Union. While critically acclaimed, the film was overshadowed by the success of Dr. Strangelove..