and the Balto-Slavo-Germanics turned west again towards the northern slopes of the Black Sea. From there, they expanded further into Europe between around 2000 and 1000 BCE. The phonological peculiarities of the consonants proposed in the glottalic theory would be best preserved in Armenian and the Germanic languages. Proto-Greek would be practically equivalent to Mycenaean Greek from the 17th century BC and closely associate Greek migration to Greece with the Indo-Aryan migration to India at about the same time (the Indo-European expansion at the transition to the Late Bronze Age, including the possibility of Indo-European Kassites). Reception Renewed interest Recent DNA-research (2015-2018) has led to renewed suggestions of a Caucasian homeland for a 'proto-proto-Indo-European'. It also has been proposed by some to lend 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." Haak et al. (2015) states that "the Armenian plateau hypothesis gains in plausibility" since the Yamnaya partly descended from a Near Eastern population, which resembles present-day Armenians. Yet, they also state that "the question of what languages were spoken by the 'Eastern European Hunter-Gatherers' and the southern, Armenian-like, ancestral population remains open." David Reich, in his 2018 publication Who We Are and How We Got Here, noting the presence of some Indo-European languages (such as Hittite) in parts of ancient Anatolia, states that "the most likely location of the population that first spoke an Indo-European language was south of the Caucasus Mountains, perhaps in present-day Iran or Armenia, because ancient DNA from people who lived there matches what we would expect for a source population both for the Yamnaya and for ancient Anatolians." Yet, Reich also notes that "...the evidence here is circumstantial as no ancient DNA from the Hittites themselves has yet been published." Nevertheless, Reich also states that some, if not most, of the Indo-European languages were spread by the Yamnaya people. According to Kroonen et al. (2018), Damgaard et al. (2018) aDNA studies in Anatolia "show no indication of a large-scale intrusion of a steppe population", but do "fit the recently developed consensus among linguists and historians that the speakers of the Anatolian languages established themselves in Anatolia by gradual infiltration and cultural assimilation." They further note that this 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