Sarduri II
Sarduri II notably expanded Urartian territory by conquering the northern region of Colchis, as well as Melid and Kummuh in the Euphrates valley. In 743 BC, at a battle located somewhere in Kummuh, the Assyrians, under Tiglath-pileser III, defeated Sarduri and his anti-Assyrian coalition, forcing the Urartians back across the Euphrates.