http://www.aina.org/aol/peter/brief.htm
Brief History of the Assyrians
by Peter BetBasoo, (author of the letter to Carly Fiorina.)
Racial Type
Assyrians are a Semitic peoples indigenous to Mesopotamia. They are Mediterranean Caucasoids, and are ethnically distinct from Arabs and Jews.
I'll let your source fight it out with the Cambridge dons, who say different.
IF they are Semitic, and allow that they are, they can't be all that "distinct" from their Hebrew cousins.