Wikipedia
The Mushki (Muški; ) were an Iron Age people of Anatolia, known from Assyrian sources. They do not appear in Hittite records. Several authors have connected them with the Moschoi (Μόσχοι) of Greek sources and the Georgian tribe of the Meskhi. Josephus Flavius identified the Moschoi with the Biblical Meshech. Two different groups are called Muški in the Assyrian sources ( Diakonoff 1984:115), one from the 12th to 9th centuries, located near the confluence of the Arsanias and the Euphrates ("Eastern Mushki"), and the other in the 8th to 7th centuries, located in Cappadocia and Cilicia ("Western Mushki"). Assyrian sources identify the Western Mushki with the Phrygians, while Greek sources clearly distinguish between Phrygians and Moschoi.
Identification of the Eastern with the Western Mushki is uncertain, but it is of course possible to assume a migration of at least part of the Eastern Mushki to Cilicia in the course of the 10th to 8th centuries, and this possibility has been repeatedly suggested, variously identifying the Mushki as speakers of a Georgian, Armenian or Anatolian idiom. The Encyclopedia of Indo-European Culture notes that "the Armenians according to Diakonoff, are then an amalgam of the Hurrian (and Urartians), Luvians and the Proto-Armenian Mushki (or Armeno-Phrygians) who carried their IE language eastwards across Anatolia."