All of what BB says is wrong as usual.
If you look at the archeology and the study of genetic drift, there are no “races”, just a mix of clusters of shifting gene pools blending and merging through invasion, colonization, slavery, and nomadism. The borders of these counties have constantly shifted over the centuries and are largely arbitrary.
The Iranians, from the same root as Aryans, incidentally, is an obsolete grouping that covers the people from India (the term comes from the Hindu Vedas) to the middle East.
I suspect he’s just dog whistling from a position of Christian exceptionalism, filtered through a US isolationist perspective and a poor education.