King Hussein decided it was time to act. Throughout September the Jordanian military launched attacks to push the PLO out of Jordan, attacks now called "Black September" by the PLO. Casualty reports are uncertain, but hundreds or perhaps thousands of PLO fadayeen were killed in the fighting and large numbers of Palestinian Arab civilians died as well. Arafat retreated to northern Jordan, close to his Syrian sponsors. Within 10 months the PLO were driven out of Jordan completely, and re-established themselves in Lebanon, a choice that led to eventual disaster for Lebanon.
Jordan Expels the PLO in 1970