In 1967, in which war did Israel fight with Egypt, Jordan, and Syria?

The Six-Day War, also known as the June War, 1967 Arab–Israeli War, or Third Arab–Israeli War, was fought between 5 and 10 June 1967 by Israel and the neighboring states of Egypt (known at the time as the United Arab Republic), Jordan, and Syria.

Relations between Israel and its neighbours were not fully normalised after the 1948 Arab–Israeli War. In 1956 Israel invaded the Sinai peninsula in Egypt, with one of its objectives being the reopening of the Straits of Tiran that Egypt had blocked to Israeli shipping since 1950. Israel was eventually forced to withdraw, but was guaranteed that the Straits of Tiran would remain open. A United Nations Emergency Force was deployed along the border, but there was no demilitarisation agreement.

In the months prior to June 1967, tensions became dangerously heightened. Israel reiterated its post-1956 position that the closure of the Straits of Tiran to Israeli shipping would be a cause for war (a casus belli). In May Egyptian President Gamal Abdel Nasser announced that the straits would be closed to Israeli vessels and then mobilised its Egyptian forces along its border with Israel. On 5 June, Israel launched what it claimed were a series of preemptive airstrikes against Egyptian airfields. The question of which side caused the war is one of a number of controversies relating to the conflict.