The Yom Kippur War caused the major 1973 oil embargo against the United States and several other countries.
Egypt and Syria attacked Israel on October 6, 1973, during the Jewish holiday of Yom Kippur. The United States and other countries supported Israel during the conflict. In response, Arab members of OAPEC reduced production and imposed an embargo on states viewed as supporting Israel.
The restrictions helped trigger the 1973 oil crisis, during which oil prices rose sharply and fuel shortages affected many economies. The crisis exposed the vulnerability of importing countries and encouraged policies such as strategic stockpiles, efficiency measures and fuel diversification.
The event is sometimes called the Arab oil embargo, while the war itself is known by several names, including the October War and the Yom Kippur War.