Page "Necho II" Paragraph 9

Necho soon captured Kadesh on the Orontes and moved forward, joining forces with Ashur-uballit and together they crossed the Euphrates and laid siege to Harran.

Although Necho became the first pharaoh to cross the Euphrates since Thutmose III, he failed to capture Harran, and retreated back to northern Syria.

At this point, Ashur-uballit vanished from history, and the Assyrian Empire was conquered by the Babylonians.