The Suez Crisis, or the Second Arab–Israeli war, also called the Tripartite Aggression in the Arab world and the Sinai War in Israel,
was an invasion of Egypt in late 1956 by Israel, followed by the United Kingdom and France. The aims were to regain control of the Suez Canal for the Western powers and to remove Egyptian president Gamal Abdel Nasser, who had just nationalised the foreign-owned Suez Canal Company, which administered the canal. After the fighting had started, political pressure from the United States, the Soviet Union and the United Nations led to a withdrawal by the three invaders. The episode humiliated the United Kingdom and France and strengthened Nasser.
On 26 July 1956, Nasser nationalised the Suez Canal Company, which prior to that was owned primarily by British and French shareholders. On 29 October, Israel invaded the Egyptian Sinai. Britain and France issued a joint ultimatum to cease fire, which was ignored. On 5 November, Britain and France landed paratroopers along the Suez Canal. Before the Egyptian forces were defeated, they had blocked the canal to all shipping by sinking 40 ships in the canal.