A History of the Jews by Paul Goodman (a kike) says Khazars are converts, p.67
Arthur Koestler developed the archeological evidence
Benjamin Freedman also claimed they are converts
Arielle Oppenheim of Hebrew University showed Palestinians have Israelite DNA
Shlomo Sand said it's all a lie
And Eran Elhaik confirmed Khazars are converts through DNA in 2017