Sanhedrin 96: When Evil Prospers
From Sennacherib to Nebuchadnezzar - and why the latter was able to conquer Jerusalem (that is, what good deed did he do that he got his way of breaking through Jerusalem's divine protection?). Also, how Nebuchadnezzar's captain of the guard, Nevuzaradan, led the charge, and succeeded where Sennacherib did not, apparently with God's approval. He was indeed a bloody man of war, until - it seems - he saw the error of his ways.