Long story short, Israel pushed all the Palestinian fighters out at some point and the PLO was forced to fight from its neighboring countries. Seeing the Palestinians as their neighbors and the Israelis as colonizers most (if not all) backed Palestine. Eventually Palestine regained control of Gaza and the west bank.
With Israel now bombing all of Gaza and sending troops into the west bank Lebanon probably see’s the writing on the wall. They’re not waiting for war to come to their land. They don’t want a bunch of Palestinian refugees they want Israel to stop invading Palestine.
Long story short, Israel pushed all the Palestinian fighters out at some point and the PLO was forced to fight from its neighboring countries. Seeing the Palestinians as their neighbors and the Israelis as colonizers most (if not all) backed Palestine. Eventually Palestine regained control of Gaza and the west bank.
With Israel now bombing all of Gaza and sending troops into the west bank Lebanon probably see’s the writing on the wall. They’re not waiting for war to come to their land. They don’t want a bunch of Palestinian refugees they want Israel to stop invading Palestine.