美国和它的西方盟友介入了这场冲突，目标是在激战的巴解组织和以色列军队之间建立军事缓冲区，从而促进双方撤军。
Into this fray stepped the US and its Western allies. Their objective was to create a military buffer between the PLO and Israeli forces that were then fighting in Beirut in order to promote the departure of both.