[muawiyah]

The Persians, amazingly, are the very same ethnic group as their Arabic speaking neighbors in Mesopotamia.

The Indo-European component of the core Persian population is very, very small.

The question now is when were these people conquered by a small group of Indo-Europeans who then imposed their language on the hapless captive population.

Arabs and Persians are considered "Caucasion".

[Verginius Rufus]

Haitian Creole is a Romance language, but the average Haitian probably doesn't have much Roman DNA.

[Renfield]

'Arabs and Persians are considered "Caucasion"'

Well, Arabs are considered Semitic. Their language is not in the Indo-European family.