Is it?
Sounds familiar, wonder where I heard that one before.
Iranians are not Arabs.
Only Arabs are Arabs. That's why the Arabian Peninsula is called the Arabian Peninsula (save for some Irani on the eastern coast), and Saudi Arabia is called Saudi Arabia, because Arabian. Not everybody between Greece and China is an Arab.
Iran is not Arab, Iran is Aran.
Look that one up for the funziez - if you're prepared to pop your 1930s Germanic mythology.
But since you won't: Iran = Aran, Irani = Arani, Iranian = Aryan.
Arab? They're not even Semites.
Well, the vast majority, lest you endeavor in some actual research and start pointing out minorities.
Good grief.