The Jordanian Army defeated the PLO in 1971 , and the latter were expelled to Lebanon .
In 1970 , Amman was a battlefield during the conflict between the Palestine Liberation Organization ( PLO ) and the Jordanian Army known as Black September .
The Jordanian Army defeated the PLO in 1971 , and the latter were expelled to Lebanon .
In 1970 , Amman was a battlefield during the conflict between the Palestine Liberation Organization ( PLO ) and the Jordanian Army known as Black September .