Suez Crisis led to a withdrawal. U.S. President Dwight D. Eisenhower had strongly warned Britain not to invade; he threatened serious damage to the British financial system by selling the US government's pound sterling bonds. Historians conclude the crisis "signified the end of Great Britain's role as one of the world's major powers". The Suez Canal was closed from October 1956 until March 1957. Israel fulfilled some of its objectives, such as attaining freedom of navigation through the Straits of Tiran, which Egypt had blocked to Israeli shipping since 1950. As a result of the conflict, the United Nations created the UNEF
Egyptian Army Officers, led by Muhammad Naguib and Gamal Abdel Nasser, overthrew King Farouk in the Egyptian Coup d'etat of 1952. The Free Officers then concluded the Anglo–Egyptian Agreement of 1954, with Great Britain. This agreement stated Britain would withdraw its troops based in the Suez Canal. During the Cold War, the army actively fought in the Suez Crisis, known in Egypt and the Arab World as the "Tripartite Aggression", the North Yemen Civil War from 1962 to 1967, and the 1967 Six-Day War. Just before the Suez Crisis, politics rather than military competence was the main criterion for promotion. The Egyptian