John Foster Dulles was an American politician, lawyer, and diplomat. A member of the Republican Party, Dulles served as United States Secretary of State under President Dwight D. Eisenhower from 1953 until his resignation in 1959 and was briefly a Senator from New York in 1949. He was a significant figure in the early Cold War era, who advocated an aggressive stance against communism throughout the world.

The United States secretary of state (SecState) is a member of the executive branch of the federal government and the head of the Department of State. The office holder is the second-highest-ranking member of the president's Cabinet, after the vice president, and ranks fourth in the presidential line of succession; first amongst cabinet secretaries.