The Armenian hypothesis, also known as the Near Eastern model, is a theory of the Proto-Indo-European homeland, initially proposed by linguists Tamaz V. Gamkrelidze and Vyacheslav Ivanov in the early 1980s, which suggests that the Proto-Indo-European language was spoken during the 5th–4th millennia BC in "eastern Anatolia, the southern Caucasus, and northern Mesopotamia".
Recent ancient DNA research has led to renewed suggestions of a Caucasian homeland for a "pre-proto-Indo-European". Particularly, an admixture between the Khvalynsk and Caucasian Copper Age burials gave rise to the ancestry that later became known as a typical marker (WSH – Western Steppe Herders) of the Yamnaya pastoralists. It also lends support to the Indo-Hittite hypothesis, according to which both proto-Anatolian and proto-Indo-European split off from a common mother language "no later than the 4th millennium BCE".These suggestions have been disputed in other recent research, which still locates the origin of the ancestor of proto-Indo-European in the Eastern European/Eurasian steppe or from a hybridization of both steppe and Northwest-Caucasian languages. The origin of the Anatolian languages according to the Near Eastern model has also been challenged because "[a]mong comparative linguists, a Balkan route for the introduction of Anatolian IE is generally considered more likely than a passage through the Caucasus, due to, for example, greater Anatolian IE presence and language diversity in the west."
