The purpose of the present study is to investigate the political history of Babylonia from the rise of the Second Dynasty of Isin (c. 1158 B.C.) to the death of Shalmaneser V (722 B.C.). The author's discussion is limited almost entirely to political history, that is the inquiry into the internal and external activity of the body politic, as exemplified in the workings of the government and especially in the focus of political life in ancient Babylonia, the king.