Who played the President of the United States in the film "Fail Safe?"

Henry Fonda played the President of the United States in the 1964 cold war thriller "Fail Safe." The film describes how tensions between the United States and the Soviet Union escalate to an accidental thermonuclear first strike. After radio communications jamming by the Soviet Union results in a U.S. Air Force Bomber Group automatically being dispatched to bomb Moscow. The President (Henry Fonda) desperately tries to recall the Bomber Group and ultimately ends up advising the Soviet Union on how to stop the impending attack. The film was shot in black and white for dramatic effect and there was no background music. Most of the scenes in the film take place in the White House bunker, the Pentagon war conference room, Strategic Air Command control room and the cockpit of the 'Vindicator" bomber, which was actually a U.S. Air Force B-58 "Hustler."