The best Cold War movie of 1964—and that's saying one whole hell of an awful lot.
1964 Directed by Sidney Lumet Written by Walter Bernstein and Peter George (based on the novel by Eugene Burdick and Harvey Wheeler) With Henry Fonda (the President), Larry Hagman (Buck), Walter Matthau (Prof. Groeteschele), William Hansen (Sec. of Def. Swenson), Frank Overton (Gen. Bogan), Fritz Weaver (Col. Cascio), and Dan O'Herlihy (Gen. Warren "Blacky" Black)
Spoiler alert: moderate, although presumably someone made you watch this in high school