Countries that define themselves as belonging to one religion or one ethnicity. I bumped into yours again while wandering, and got the urge to revisit it.
The current religious demographics of Iran are disputed.[2] According to the 2011 Iranian census, 99.98% of Iranians believe in Islam, while the rest of the population believe in other officially recognized minority religions: Christianity, Judaism, and Zoroastrianism.[3] However, because irreligion and some other religions are not recognized by the Iranian government and apostasy from Islam may be subject to capital punishment, government figures may be distorted.[2] https://en.wikipedia.org/wiki/Religion_in_Iran
The government does not conduct census on religion, but estimates put the percentage of the majority Sunnis at 85-90%.[4] The rest are other forms of islamic minorities. Other smaller communities (Ismailis and) reside in the south, with Ismailis constituting around half of the population of the province of Nejran, and a small percentage of the Holy Islamic cities of Mecca and Medina. There is also a Christian population of uncertain size. According to Gallup atheists account for 5% of the population with a total non-religious population of 24% https://en.wikipedia.org/wiki/Demographics_of_Saudi_Arabia#Religion
I'm guessing the situation in Afghanistan, Qatar and UAE is sorta similar.
The point i lost sight of earlier i think is the question of the constitutions of the countries.
Oops, can't go to written constitutions as Israel doesn't have one. So where to go. To the law i guess.