The Armenian Highland lies in the highlands surrounding Mount Ararat, the highest peak of the region. In the Bronze Age, several states flourished in the area of Greater Armenia, including the Hittite Empire (at the height of its power), Mitanni (South-Western historical Armenia), and Hayasa-Azzi (1600–1200 BC). Soon after Hayasa-Azzi were Arme-Shupria (1300s–1190 BC), the Nairi (1400–1000 BC) and the Kingdom of Urartu (860–590 BC), who successively established their sovereignty over the Armenian Highland. Each of the aforementioned nations and tribes participated in the ethnogenesis of the Armenian people. Under Ashurbanipal (669–627 BC), the Assyrian empire reached the Caucasus Mountains (modern Armenia, Georgia and Azerbaijan).
What did the Hittite Empire reach under Ashurbanipal?