Until globalists like Bush, Clinton, and Obama decided to "Democratize" the middle East by supporting the overthrow (or the attempted overthrow) of secular dictators, Iraq, Egypt, and Syria had significant Christian minorities. Only the Egyptian Copts hang on because Al Sisi overthrew the Muslim Brotherhood and restored some semblance of order in Egypt. The rest of the Arab Christians have been either killed over driven out of their country in the name of "Arab Spring" and "Democracy."
The new leader in Saudi Arabia is talking like he intends to reverse that trend. And in part of KSA of all places. NEOM is intended to be an autonomous region of KSA open to other religions. We shall see...