Other Turkic groups include the Qashqa'i tribe in the south and southwest part of the central plateau, and the Turkmen in the northeast.
Today as a result of migration and conquest, people of Indo-European, Turkic, Arab, and Caucasian origin have some claim to Iranian cultural identity.
This includes populations living in Iraq, the Persian Gulf region, the Caucasus region, Central Asia, Afghanistan, Pakistan, and northern India.
The formal name of the Iranian state is Jomhuri-ye Islami-ye Iran , the Islamic Republic of Iran. The terms "Iran" as the designation for the civilization, and "Iranian" as the name for the inhabitants occupying the large plateau located between the Caspian Sea and the Persian Gulf have been in continual use for more than twenty-five hundred years.
Many of these peoples reside within the territory of modern Iran.
Outside of Iran, those identifying with the larger civilization often prefer the appellation "Persian" to indicate their affinity with the culture rather than with the modern political state.
It is perhaps easiest to speak of the various ethnic groups in the country in terms of their first language.