Dwight D. Eisenhower's tenure as the 34th president of the United States began with his first inauguration on January 20, 1953, and ended on January 20, 1961. Eisenhower, a Republican from Kansas, took office following his landslide victory over Democratic nominee Adlai Stevenson in the 1952 presidential election. Four years later, in the 1956 presidential election, he defeated Stevenson again, to win re-election in a larger landslide. Eisenhower was constitutionally limited to two terms (the first re-elected President to be so) and was succeeded by Democrat John F. Kennedy, who won the 1960 presidential election.
Eisenhower held office during the Cold War, a period of geopolitical tension between the United States and the Soviet Union. Eisenhower's New Look policy stressed the importance of nuclear weapons as a deterrent to military threats, and the United States built up a stockpile of nuclear weapons and nuclear weapons delivery systems during Eisenhower's presidency. Soon after taking office, Eisenhower negotiated an end to the Korean War, resulting in the partition of Korea. Following the Suez Crisis, Eisenhower promulgated the Eisenhower Doctrine, strengthening U.S. commitments in the Middle East. In response to the Cuban Revolution, the Eisenhower administration broke ties with Cuba and began preparations for an invasion of Cuba by Cuban exiles, eventually resulting in the failed Bay of Pigs Invasion. Eisenhower also allowed the Central Intelligence Agency to engage in covert actions, such as the 1953 Iranian coup d'état and the 1954 Guatemalan coup d'état.