The first shah of Iran asked that the world refer to his country as “Iran.” Persia is the Western corruption of the Pars tribe, the first Aryan settlers in the region. Iran means “land of the Aryans.”
Shah’s are all gone. I know a lot of Iranians and a lot in my daughters school and they prefer to say they are from Persia. I always ask where is Persia. Just to tick them off.
My experience.