The Six-Day War (Arabic: حرب الأيام الستة, ħarb al‑ayyam as‑sitta ; Hebrew: מלחמת ששת הימים, Milhemet Sheshet Ha‑Yamim), also known as the 1967 Arab-Israeli War, the Third Arab-Israeli War, Six Days' War, an‑Naksah (The Setback), or the June War, was fought between Israel and its Arab neighbours Egypt, Jordan, and Syria. Iraq, Saudi Arabia, Kuwait, and Algeria also contributed troops and arms to the Arab forces.
In May of 1967, Egypt expelled the UNEF,United Nations Emergency Force from the Sinai Peninsula, where they had been stationed as a buffer zone since 1957 following the 1956 Sinai invasion by Israel. They amassed 1000 tanks and 100,000 soldiers on the border, blockaded the Straits of Tiran (the entrance to the Gulf of Aquaba, AKA the Gulf of Eilat) to Israeli ships, and called for unified Arab action against Israel. On June 5 1967, Israel launched a pre-emptive attack against Egypt's airforce fearing an imminent invasion by Egypt. Jordan then attacked western Jerusalem and Netanya. At the war's end, Israel had gained control of eastern Jerusalem, the Gaza Strip, the Sinai Peninsula, the West Bank, and the Golan Heights. The results of the war affect the geopolitics of the region to this day.