Abstract
In the 18th century BC, the creation of an unprecedented territorial state covering the whole of Upper Mesopotamia was a remarkable feat. It can be attributed to a particularly charismatic and energetic man, Samsi-Addu, alias Šamši-Adad Ist (1809-1776 BC). It seems significant that with the death of its founder, this " kingdom of Upper Mesopotamia " immediately collapsed. After decades of effort, the chronology of Samsi-Addu's reign has been refined, as has the historical geography of his territory. Despite this undeniable progress, questions remain. For example, little is known about the southern border. And yet, being adjacent to Babylonia and Ešnunna, and coveted by these two powers, this part of the kingdom of Upper Mesopotamia seems to have undergone notable fluctuations. The aim of this paper is to review our knowledge of this region.
