Sinai Peninsula the boundary between Egyptian territory in Africa and the Sinai Peninsula. Thereafter, Israeli ships were prohibited from using the Canal, owing to the state of war between the two states. Egypt also prohibited ships from using Egyptian territorial waters on the eastern side of the peninsula to travel to and from Israel, effectively imposing a blockade on the Israeli port of Eilat. In October 1956, in what is known in Egypt as the Tripartite Aggression, Israeli forces, aided by Britain, and France (which sought to reverse the nationalization and regain control over the Suez Canal), invaded Sinai and occupied much
Suez Crisis withdrawn soon, and Israeli troops to withdraw later on, while keeping control over the Suez Canal. After the fighting ended, Abdel Hakim Amer, Egypt's Chief-of-Staff, accused Nasser of provoking an unnecessary war and then blaming the military for the result. The British historian D. R. Thorpe wrote that the imposed ending to the Crisis gave Nasser "an inflated view of his own power". In his mind, he had defeated the combined forces of the United Kingdom, France and Israel, whereas in fact the military operation had been "defeated" by pressure from the United States. Despite the Egyptian defeat, Nasser emerged