Even more devastating was the 587 b.c. invasion by the Nebuchadnezzar-led Babylonians.
The Babylonian invasion was crucial in establishing Nebuchadnezzar's dominance. 
mnli hypothesis: The Babylonian invasion was crucial in establishing Nebuchadnezzar's dominance.  premise: Even more devastating was the 587 b.c. invasion by the Nebuchadnezzar-led Babylonians.