Never having read the book, The Thirteenth Tribe, by Arthur Koestler, maybe I should have dug a little deeper into the true history of the Khazars...and Arthur Koestler...
KOESTLER, KHAZAR, KAPUT
by Barry Chamish
...Koestler was a rather inconsistent thinker. He was at times a communist, an anti-communist, and ended his career as a New Age author. But one philosophy stuck with him; in the '30s he moved to Israel and remained a Zionist all his life. He would twist in his grave if he saw how American anti-semites had twisted his ruminations. They view Koestler as a prophet of Jew-hatred and his book as belonging in the second tier of theocracy just behind the Bible.
According to them, since the Jews are not God's chosen people, instead are proto-Turks masquerading as Jews, we have no historical claim to Israel because we have no right to call ourselves Jews. Thus, only Sephardim are the real thing. What is planned for them in the future is never stated, but the Ashkenazim are fit for extermination...
Hmmm...not very Kosher...