Yet Iranians are not Arabs, they are Persians. See how that works? The Islamic Republic of Iran is ruled by a Supreme Leader who is the highest religious authority in the land. Iran converted to Islam and Islam is the dominant religion in Iran. All Iranians submit to the will of God because their Supreme Leader makes it so. They are called Muslims because they submit to the will of God through Islam not because of Islam itself. How can an Arab and a Persian be the same ethnicity? They are not. They pray the same they pray in the same language and both ethnic groups submit to the will of God. Ask a Persian to translate what Muslim means in Arabic and they will tell you "One who submits to the will of God". There is not 1 specification that says Muslim is specific to Islam. You will not find that said anywhere. Not in Arabic.