[Siamese Princess]

Yeah it's not very hard to tell the difference between Iranians and surrounding countries in the mid-east. Iranians are generally much lighter skinned, and have different facial structure -nose, chin, jaw.

There are some parts of Iran like Kuzekstan which borders Iraq where the people are generally darker and look more Arabic, but in general the people have a different look than Arabs.

Iran is an empire -- barely half the population is ethnically Persian. The Kurds are also an Indo-European people. The Azerbaijanis are related to the Turks. There are also Arabs, Baluchistanis, Armenians, etc. There is an independence movement among Iranian Azerbaijanis. I don't know what the Iranian Kurds think about independence.

[Cronos]

The Azerbaijanis are related to the Turks.

You are wrong. Azeris, Kurds, Tajiks etc. are all Irani peoples. Uzbeks, Turkmen, Kazakhs , Turks are all turkic-Mongol peoples.