Background and escalation Prior to the start of the war, attacks conducted against Israel by fledgling Palestinian guerrilla groups based in Syria, Lebanon, and Jordan had increased, leading to costly Israeli reprisals. In November 1966 an Israeli strike on the village of Al-Samūʿ in the Jordanian West Bank left 18 dead and 54 wounded, and, during an air battle with Syria in April 1967, the Israeli Air Force shot down six Syrian MiG fighter jets. In addition, Soviet intelligence reports in May indicated that Israel was planning a campaign against Syria, and, although inaccurate, the information further heightened tensions between Israel and its Arab neighbours. Egyptian Pres. Gamal Abdel Nasser had previously come under sharp criticism for his failure to aid Syria and Jordan against Israel; he had also been accused of hiding behind the United Nations Emergency Force (UNEF) stationed at Egypt’s border with Israel in the Sinai. Now, however, he moved to unambiguously demonstrate support for Syria: on May 14, 1967, Nasser mobilized Egyptian forces in the Sinai; on May 18 he formally requested the removal of the UNEF stationed there; and on May 22 he closed the Gulf of Aqaba to Israeli shipping, thus instituting an effective blockade of the port city of Elat in southern Israel. On May 30, King Hussein of Jordan arrived in Cairo to sign a mutual defense pact with Egypt, placing Jordanian forces under Egyptian command; shortly thereafter, Iraq too joined the alliance.

Main events of the war In response to the apparent mobilization of its Arab neighbours, early on the morning of June 5, Israel staged a sudden preemptive air assault that destroyed more than 90 percent Egypt’s air force on the tarmac. A similar air assault incapacitated the Syrian air force. Without cover from the air, the Egyptian army was left vulnerable to attack. Within three days the Israelis had achieved an overwhelming victory on the ground, capturing the Gaza Strip and all of the Sinai Peninsula up to the east bank of the Suez Canal. Get exclusive access to content from our 1768 First Edition with your subscription. Subscribe today An eastern front was also opened on June 5 when Jordanian forces began shelling West Jerusalem—disregarding Israel’s warning to King Hussein to keep Jordan out of the fight—only to face a crushing Israeli counterattack. On June 7 Israeli forces drove Jordanian forces out of East Jerusalem and most of the West Bank. Photos and films of Israeli troops taking control of the Old City of Jerusalem have proved to be some of the war’s iconic images. The UN Security Council called for a cease-fire on June 7 that was immediately accepted by Israel and Jordan. Egypt accepted the following day. Syria held out, however, and continued to shell villages in northern Israel. On June 9 Israel launched an assault on the fortified Golan Heights, capturing it from Syrian forces after a day of heavy fighting. Syria accepted the cease-fire on June 10. Six-Day War in the Golan Heights Israeli tanks advancing on the Golan Heights during the Six-Day War between Arab and Israeli forces, June 10, 1967. Assaf Kutin/© The State of Israel Government Press Office

Aftermath and legacy The Arab countries’ losses in the conflict were disastrous. Egypt’s casualties numbered more than 11,000, with 6,000 for Jordan and 1,000 for Syria, compared with only 700 for Israel. The Arab armies also suffered crippling losses of weaponry and equipment. The lopsidedness of the defeat demoralized both the Arab public and the political elite. Nasser announced his resignation on June 9 but quickly yielded to mass demonstrations calling for him to remain in office. In Israel, which had proved beyond question that it was the region’s preeminent military power, there was euphoria. The Six-Day War also marked the start of a new phase in the conflict between Israel and the Palestinians, since the conflict created hundreds of thousands of refugees and brought more than one million Palestinians in the occupied territories under Israeli rule. Months after the war, in November, the United Nations passed UN Resolution 242, which called for Israel’s withdrawal from the territories it had captured in the war in exchange for lasting peace. That resolution became the basis for diplomatic efforts between Israel and its neighbours, including the Camp David Accords with Egypt and the push for a two-state solution with the Palestinians.

This article was most recently revised and updated by Adam Zeidan , Assistant Editor.