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
Suez Crisis Mediterranean and the beginning of the invasion. Additionally, the coming of winter weather to the Mediterranean in late November would render the invasion impossible, which thus meant the invasion had to begin before then. An additional problem was Eden, who constantly interfered with the planning and was so obsessed with secrecy that he refused to tell Keightley what his political objectives were in attacking Egypt, namely was he interested in retaking the Suez Canal or toppling Nasser, or both. Eden's refusal to explain to Keightley just what exactly he was hoping to accomplish by attacking Egypt exasperated Keightley to no