Nasser assumed power as president in June 1956. British forces completed their withdrawal from the occupied Suez Canal Zone on 13 June 1956. He nationalised the Suez Canal on 26 July 1956; his hostile approach towards Israel and economic nationalism prompted the beginning of the Second Arab-Israeli War (Suez Crisis), in which Israel (with support from France and the United Kingdom) occupied the Sinai peninsula and the Canal. The war came to an end because of US and USSR diplomatic intervention and the ''status quo'' was restored.