Rev. 20:7-8 Now when the thousand years have expired, Satan will be released from his prison and will go out to deceive the nations which are in the four corners of the earth, Gog and Magog, to gather them together to battle, whose number is as the sand of the sea.

I interpret this as Satan will go out to deceive the nations of the world and Gog and the people of Magog will gather the deceived to battle.

Are you interpreting as Satan will deceive the nations of Gog and Magog?

I haven't researched the Khazars much, I don't know if their the Israelites.