Allen, your analogy doesn't work. Lowland Scots are not "English" but they are Anglo-Saxons. "English" denotes a country as well as a language, "Anglo-Saxon" an ethnolinguistic heritage but not a specific country.

"Arab" is much closer to "Anglo-Saxon" than to "English," since Syrians, Palestinians, Saudis, Iraqis, people from Qatr and the Emirates, many Libyans, many Moroccans, Algerians and Tunisians, and for that matter some Americans, Australians, etc, are all Arabs.

The connection between Khazars and Cossacks was not made by me, but by Little Hawk. I was merely noting that it was inconsistent with the rest of his theory.