Black September: The Jordanian-PLO Civil War of 1970

King Hussein crushes the PLO and expels it from Jordan

king hussein nasser
Jordan's King Hussein and Egypt's Gamal Abdel Nasser in a 1950s meeting.

The Jordanian civil war of September 1970, also known in the Arab world as Black September, was an attempt by the Palestine Liberation Organization (PLO) and the more radical Popular Front for the Liberation of Palestine (PFLP) to topple Jordanian King Hussein and seize control of the country.

The PFLP sparked the war when it hijacked four jetliners, diverted three of them to a Jordanian airstrip and blew them up, and for three weeks held on to dozens of the 421 hostages it seized as human bargaining chips.

Why Palestinians Turned on Jordan

In 1970, some two-thirds of the Jordanian population was Palestinian. After the Arabs' defeat in the 1967 Arab-Israeli War, or Six Day War, Palestinian militants took part in the War of Attrition against Israel. The war was mostly fought in Sinai between Egyptian and Israeli forces. But the PLO launched raids from Egypt, Jordan, and Lebanon as well.

The Jordanian king had not been keen to fight the 1967 war, nor was he eager to keep letting Palestinians attack Israel from his territory, or from the West Bank, which had been under Jordanian control until Israel occupied it in 1967. King Hussein had maintained secret, cordial relations with Israel through the 1950s and 1960s. But he had to balance his interests in preserving a peace with Israel against a restless and increasingly radicalized Palestinian population, which was threatening his throne.

Jordanian army and Palestinian militias led by the PLO fought several bloody battles in the summer of 1970, most violently during the week of June 9-16, when 1,000 people were killed or wounded. On July 10, King Hussein signed an agreement with the PLO's Yasser Arafat pledging support to the Palestinian cause and noninterference in Palestinian commando raids on Israel in exchange for a Palestinian pledge to support Jordanian sovereignty and remove most Palestinian militias from Amman, the Jordanian capital. The agreement proved hollow.

Promise of Hell

When Egypt's Gamal Abdel Nasser agreed to a cease-fire in the war of attrition and King Hussein supported the move, PFLP leader George Habash promised that "we will turn the Middle East into a hell," while Arafat invoked the battle of Marathon in 490 B.C. and vowed, before a cheering crowd of 25,000 in Amman on July 31, 1970, that "We will liberate our land."

Three times between June 9 and Sept. 1, Hussein escaped assassination attempts, the third time as would-be assassins opened fire on his motorcade while he drove to the airport in Amman to meet his daughter Alia, who was returning from Cairo.

The War

Between Sept. 6 and Sept. 9, Habash's militants hijacked five planes, blew up one and diverted three others to a desert strip in Jordan called Dawson Field, where they blew up the planes on Sept. 12. Rather than receiving the support of King Hussein, the Palestinian hijackers were surrounded by units of the Jordanian military. Even though Arafat worked for the release of the hostages, he also turned his PLO militants loose on the Jordanian monarchy. A bloodbath ensued.

Up to 15,000 Palestinian militants and civilians were killed; swaths of Palestinian towns and refugee camps, where the PLO had amassed weapons, were leveled. The PLO leadership was decimated, and between 50,000-100,000 people were left homeless. Arab regimes criticized Hussein for what they called "overkill."

Before the war, Palestinians had run a state-within-a-state in Jordan, headquartered in Amman. Their militias ruled the streets and imposed brutal and arbitrary discipline with impunity.

King Hussein ended the Palestinians' reign.

The PLO Is Thrown Out of Jordan

On Sept. 25, 1970, Hussein and the PLO signed a ceasefire mediated by Arab nations. The PLO temporarily maintained control over three towns--Irbid, Ramtha, and Jarash--as well as Dawson Field (or Revolution Field, as the PLO termed it), where the hijacked planes had been blown up.

But the PLO's last gasps were short-lived. Arafat and the PLO were expelled from Jordan by early 1971. They went to Lebanon, where they proceeded to create a similar state-within-a-state, weaponizing a dozen Palestinian refugee camps around Beirut and in South Lebanon, and destabilizing the Lebanese government as they had the Jordanian government, as well as playing a leading role in two wars: the 1973 war between the Lebanese army and the PLO, and the 1975-1990 civil war, in which the PLO fought alongside leftist Muslim militias against Christian militias.

The PLO was expelled from Lebanon following Israel's 1982 invasion.

Black September's Consequences

Besides seeding Lebanon's civil war and disintegration, the Jordanian-Palestinian war of 1970 led to the creation of the Palestinian Black September movement, a commando faction that broke away from the PLO and directed several terrorist plots to avenge Palestinians' losses in Jordan, including hijackings, the assassination of Jordanian Prime Minister Wasif al-Tel in Cairo on Nov. 28, 1971, and, most notoriously, the murder of 11 Israeli athletes at the 1972 Munich Olympics.

Israel, in turn, unleashed its own operation against Black September as Israeli Prime Minister Golda Meir ordered the creation of a hit squad that fanned out in Europe and the Middle East and assassinated numerous Palestinian and Arab operatives. Some were connected with Black September. Some were not, including the murder of Ahmed Bouchiki, an innocent Moroccan waiter, in the Norwegian ski resort of Lillehammer in July 1973.

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Your Citation
Tristam, Pierre. "Black September: The Jordanian-PLO Civil War of 1970." ThoughtCo, Jul. 31, 2021, Tristam, Pierre. (2021, July 31). Black September: The Jordanian-PLO Civil War of 1970. Retrieved from Tristam, Pierre. "Black September: The Jordanian-PLO Civil War of 1970." ThoughtCo. (accessed March 29, 2023).