Dean Rusk
Dean Rusk with President Johnson and Robert McNamara, February 9, 1968 David Dean Rusk (February 9, 1909 – December 20, 1994) was the United States Secretary of State from 1961 to 1969 under presidents John F. Kennedy and Lyndon B. Johnson. Rusk is the joint-second-longest serving U.S. Secretary of State of all time, behind only Cordell Hull and tied with William H. Seward.