In the film 'Fail Safe', who played the US President?

Henry Jaynes Fonda (May 16, 1905 – August 12, 1982) was an American film and stage actor with a career spanning five decades.

Fonda made his mark early as a Broadway actor. He also appeared in 1938 in plays performed in White Plains, New York, with Joan Tompkins. He made his Hollywood debut in 1935, and his career gained momentum after his Academy Award-nominated performance as Tom Joad in 'The Grapes of Wrath', a 1940 adaptation of John Steinbeck's novel about an Oklahoma family who moved west during the Dust Bowl.

In the Cold War suspense film 'Fail-Safe' (1964), Fonda played the President of the United States who tries to avert a nuclear holocaust through tense negotiations with the Soviets after American bombers are mistakenly ordered to attack the USSR.