[ROARosen]

From Wikipedia[0]:

Under President Arafat, the Fatah-dominated Palestinian Authority adopted the 2003 Amended Basic Law, which stipulates Islam as the sole official religion in Palestine and the principles of Islamic sharia as a principal source of legislation. The draft Constitution contains the same provisions. The draft Constitution was formulated by a Constitutional Committee, established by Arafat in 1999 and endorsed by the PLO.

[0] https://en.wikipedia.org/wiki/Palestine_Liberation_Organizat...

[Apocryphon]

So, after the Lebanese Civil War already ended.

[ROARosen]

Arafat was chairman of the PLO from the 1960's, before the Lebanese Civil War started. These were his policies.

[Apocryphon]

The dates in the excerpt are 1999 and 2003!