The distinction in Iran is that the people are Persians first and muslins second. And the mullahs have not played nice the last 40 years. The mullahs and Rev Guard have sucked a lot of cash away to expand their influence around the region and into Venezuela.
Great Iran includes Turkmenistan, uzbekistan (the uzbeks are of iranian maternal and partial turkic paternal origin), Tajiks (pure Iranians), Baluchis, Azeris (Iranian people with a Turkic language) and Kurdsistan