Urshu was a commercial city governed by a Lord (EN), it was an ally of Ebla and appears in the tablets as Ursa'um. later it was mentioned in the inscriptions of Gudea (r. c.2144–2124 BC middle chronology) as the city where wood resins were procured, an old Assyrian letter that dates to the 19th century BC mentions a temple of God Ashur in Urshu.
In the beginning of the 18th century BC, Urshu allied with Yamhad against Yahdun-Lim of Mari. Relations with Assyria were also strained, men of Urshu were summoned by Yapah-Adad and his Habiru to attack the lands of Shamshi-Adad I of Assyria. The texts of Mari mentions a conflict between Urshu and Carchemish, the tribes of Upra-peans and Ra-beans attacked Urshu through the land of Carchemish which caused Urshu to attack a contingent of Carchemishean troops and civilians that advanced along the bank of the Euphrates.
Later, Urshu became an economic rival to Yamhad, and entered an alliance with Qatna and Shamshi-Adad I to attack Sumu-Epuh of Yamhad (r. c.1810-1780 BC). the death of Shamshi-Adad and the rise of Yarim-Lim I of Yamhad brought an end to the rivalry, as Yamhad was elevated into a Great Kingdom and imposed its direct authority over northern, western and eastern Syria, bringing Urshu under its sphere of influence without annexing it. the Tablets of Mari mentions few kings of Urshu that dates to this era including Shennam, and Atru-Sipti who visited Mari in the 12th year of its king Zimri-Lim.
The Hittite king Hattusili I attacked Urshu in his second year, he laid siege to the city which lasted for six months, the Hittite king had 80 chariots, and conducted his operations from the city of Lawazantiya (located in modern Elbistan district) in the Taurus foothills of eastern Cilicia.
The history of Urshu after the conquest is ambiguous, in the 15th century BC it appeared in the Tablets of Alalakh as Uris or Uressi, and was mentioned as Urussa in the treaty between the Hittite Tudhaliya II and Sunassura II of Kizzuwatna as part of the later, the city again became part of the Hittite empire and was last mentioned in records dated to the last periods of that empire.
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