The theory that all or most Ashkenazi Jews might be descended from Khazars dates back to the racial studies of late 19th century Europe. In most cases it has been cited to assert that most modern Jews are not descended from Israelites and/or to refute Israeli claims to Israel, although genetic descent is not the basis of Jewish citizenry in Israel.Quote
In 1951 Southern Methodist University professor John O. Beaty publishedThe Iron Curtain over America, a work which claimed that "Khazar Jews" were "responsible for all of America's — and the world's — ills beginning with World War I". The book repeated a number of familiar antisemitic claims, placing responsibility for U.S. involvement in World Wars I and II and the Bolshevik revolution on these Khazars, and insisting that Khazar Jews were attempting to subvert Western Christianity and establish communism throughout the world. The American millionaire J. Russell Maguire gave money towards its promotion, and it was met with enthusiasm by hate groups and the extreme right.
The Khazar theory still enjoys popularity among anti-Zionists and antisemites. In the 1970s and 80s the Khazar theory was also advanced by some Russian chauvinist antisemites, particularly the historian Lev Gumilyov, who portrayed "Judeo-Khazars" as having repeatedly sabotaged Russia's development since the 7th century.
Historian Bernard Lewis, stated in 1999:
"This theory... is supported by no evidence whatsoever. It has long since been abandoned by all serious scholars in the field, including those in Arab countries, where the Khazar theory is little used except in occasional political polemics."http://en.wikipedia.org/wiki/Khazars"> //http://en.wikipedia.org/wiki/Khazars