Wikipedia
Urartu ( - Urartu, Assyrian: ; Babylonian: Urashtu), corresponding to the biblical Kingdom of Ararat or Kingdom of Van (, Urartian: ), was an Iron Age kingdom centred on Lake Van in the Armenian Highlands.
Strictly speaking, Urartu is the Assyrian term for a geographical region, while "kingdom of Urartu" or "Biainili lands" are terms used in modern historiography for the Urartian-speaking Iron Age state that arose in that region. The language appears in cuneiform inscriptions. It is argued on linguistic evidence that proto-Armenian came in contact with Urartian at an early date (3rd-2nd millennium BC), before formation of Urartian kingdom.
That a distinction should be made between the geographical and the political entity was already pointed out by König (1955).
The landscape corresponds to the mountainous plateau between Anatolia, Mesopotamia, the Iranian Plateau, and the Caucasus Mountains, later known as the Armenian Highlands. The kingdom rose to power in the mid-ninth century BC, but was conquered by the Medes in the early sixth century BC. The heirs of Urartu are the Armenians and their successive kingdoms.