The last of the Third Dynasty of Ur, Ibbi-Sin was the son of Shu-Sin. During his reign, several city-states rebelled, and the Amorites succeeded in invading the country.
Flooding of the Euphrates contributed to the economic and ecological problems Ibbi-Sin faced. After these tribulations, he was susceptible to attack by Elam and Shimashki: the king was captured and the king of Isin, Ishbi-Erra (reigned c. 2017-1985 B.C.E.), an Amorite, became his successor.