Another nationality present in Caucasus are jews. They are divided into tats (farsi-speaking jews from Iran), Kipchaq jews who migrated with kipchaqs from Asia, Ashkenazi - european jews, and georgian jews.
Also important are muslim clans descending from jews. Approximately 15% of chechens (around Shatoi, Khasa-urt etc.) belong to clans that ether considered to be jewish (zhukti) or in some blood relationship with them. Another example are lezginians from Ahty, while today they are considered muslims and respectively chechens or lezgins they maintain some of their jewish traditions (shabbat etc.).
Enclosed are jewish or circassian (they used to serve in Israel army as mercenaries and later conscripts) in Jerusalem, and a tat couple.
For fun - mountain jews performing in chechen:
http://www.mountain-jews.co.il/Video/Shrek.asx