 For the next 60 or so years, Babylon and Chaldea remained peacefully under direct Assyrian control.The Chaldeans remained subjugated and quiet during this period, and the next major revolt in Babylon against the Assyrian empire was fermented not by a Chaldean, Babylonian or Elamite, but by Shamash-shum-ukin, who was an Assyrian king of Babylon, and elder brother of Ashurbanipal (668-627 BCE), the new ruler of the Neo-Assyrian Empire.Shamash-shum-ukin (668–648 BCE) had become infused with Babylonian nationalism after sixteen years peacefully subject to his brother, and despite being Assyrian himself, declared that the city of Babylon and not Nineveh or Ashur should be the seat of the empire.