Is Iran an Arab? Why are people in Saudi Arabia and Qatar black?

No. Although Arabs and Iranians believe in Islam, they belong to two different nationalities. Iran is a descendant of the Aryans, the ancestors of Persians, and its ethnic origin is very different from that of Arabs and Israelis belonging to Semites. In other words, Saudi Arabia is an Arab, while Iran belongs to the descendants of Persians, who created a prosperous and splendid civilization on the Iranian plateau and had frequent business contacts with China in history. Their skin is a little dark.