 He was a significant figure in the early Cold War era, advocating an aggressive stance against communism throughout the world.Born in Washington, D.C., Dulles joined the New York City law firm of Sullivan & Cromwell after graduating from George Washington University Law School.His grandfather, John W. Foster, and his uncle, Robert Lansing, both served as United States Secretary of State, while his brother, Allen Dulles, served as the Director of Central Intelligence from 1953 to 1961.