Dr. Strangelove (1964) - Doomsday Machine

President Muffley (Peter Sellers) asks Ambassador de Sadesky (Peter Bull) why the Soviets would build a "Doomsday Machine," leading to the first appearance of the title character (also Sellers), in the war room during the nuclear crisis, in Stanley Kubrick's Dr. Strangelove Or: How I Learned To Stop Worrying And Love The Bomb, 1964.