The Yom Kippur War, also known as the October War, took place in 1973 when a coalition of Arab states, led by Egypt and Syria, launched a surprise attack on Israel during the Jewish holiday of Yom Kippur. The conflict aimed to regain territories lost to Israel during the Six-Day War in 1967, specifically the Sinai Peninsula and the Golan Heights. The war lasted for about three weeks, resulting in significant casualties on both sides. Eventually, a ceasefire was brokered by the United Nations, leading to subsequent peace negotiations. The war had lasting impacts on Middle Eastern politics and shaped future relations between Israel and its neighbors.