A lot of the foreign workers. Most of which go to SA out of their own free will to make money. As we have established, both SA and Iran hate local Christian converts. Nevermind that Christians being loyal to a Shia theocracy makes even less sense than being loyal to a Saudi king.SA prosecute christian more then others,and USA would change that - if they cared.
And,according to all book writen by people who go to Iran,they do not prosecute christian minority as long as they remain loyal.
Standart autocratic regime in which you could live normal live.
Where is christian minority in SA?