In 1953, Stalin died, and after the 1952 presidential election, President Dwight D. Eisenhower used the opportunity to end the Korean War, while continuing Cold War policies. Secretary of State John Foster Dulles was the dominant figure in the nation's foreign policy in the 1950s. Dulles denounced the "containment" of the Truman administration and espoused an active program of "liberation", which would lead to a "rollback" of communism. The most prominent of those doctrines was the policy of "massive retaliation", which Dulles announced early in 1954, eschewing the costly, conventional ground forces characteristic of the Truman administration in favor of wielding the vast superiority of the U.S. nuclear arsenal and covert intelligence. Dulles defined this approach as "brinkmanship".