Yes, that's right, and (as you probably know) the Armenian Highlands extend deeper into the South Caucasus, beyond present day's Republic of Armenia.
The Armenian Highlands includes Nakhichevan, and all of Armenia's Karabakh Stronghold, that lie within present day Azerbaijan. It includes
a huge area of present day Eastern Turkey, extending through Kars, Erzerum, Bitlis, Muş, Erzincan, and Van, and includes Lake Van. In addition to the Western Armenian Highlands, the historical boundaries of Western Armenia stretched much further, all the way to Adana (aka Cilicia), on the Mediterranean Coastline near Cypress.
Small portions of Southwest Georgia (in javakhk territory),
and Northwest Iran (to the Northwest shores of Lake Urmia) are also defined as part of the Armenian Highlands. It might be interesting to note that
my ancestral town is Muş (aka, Mush, or Moush), located west of Lake Van, in the heartland of Western Armenia.
https://www.britannica.com/place/Armenian-Highland
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