Lebanon’s probably not as fertile ground for them as OTL, either. With Egypt still a threat, Israeli intervention in Lebanon seems unlikely. That’s going to change the dynamic on the ground. Likely less aggressive Christian extremists, so less provocative to the Muslim population and more defensive. The fratricidal Camp Wars continue based on the gain of personal power rather than ideology. And Syrian-style Baathism is the plurality force in the country.There were another reason, Extrem Islamist
Sadat try them Integration into the liberal Egypt society
That din't work and Omar Abdel-Rahman, (yes the guy of WTC bombing) issue a fatwa on Sadat
in ITTL there was extremist Islamic uprise trying to kill Sadat and install a Islamist state like Iran
Since Sadat survived this have allot consequence in rise of extremist Islam
He will hunt down the extremist and exterminate them, like Omar Abdel-Rahman, (in cooperation with his allies USA)
like wise will happen in Saudi Arabia a purge against extremist in aftermath of the Grand Mosque seizure of 1979
Since the soviets NEVER invaded Afganistan ITTL there is no mujahideen means not rise to power for Osama bin Laden ?
I guess the Extremist could find in Civil war Libanon a base of operation and try to establish a "Islamist state" there
This could prolong the Civil war for decades to come
There are probably pockets for extremists to find, but fewer than OTL without the uniting events of the Israeli intervention and rising violence from Mr Lebanon.
Beirut will be a mess. Wonder if the international forces are there...