(Kha-at-tu-shi-lish or HATTUSILI) Hittite King, son under Mursilis II, brother Muwattallis and uncle and successor of Mursilis III (Urkhi-III), who moved from the Kingdom after a deed of arms, which tried to justify in his autobiography. The dissensions between uncle and nephew were produced not only by the violent action of Mursilis III (who snatched his uncle the territories on which ruled as a vassal King), but also by the different approach that had Hittite foreign policy (problems of Kadesh), and especially by the marriage of Khattusilis III with Pudu-Khepa, Priestess and heiress of Kizzuwatna, fact and attitudes with which Khattusilis III increased his prestige and power.
After a military confrontation in Shamukha, where he was defeated Mursilis III, Khattusilis III ascended the throne. Nephew spared and after several episodes of intrigue had to banish him "to the side of the sea" (do Cyprus?, does Egypt?). His first act of Government was replaced on the throne of Amurru to Prince Benteshina, who protected in his exile from Hakpis. Then he gave the city of Kadesh and gave it to one of her daughters - name Gashuliya - in marriage, ensuring thus a faithful ally against Egypt. Khattusilis III strengthened the bonds of friendship with Babylon (Kadashman-Turgu) and maintained, although with some rods, traditional hospitality with Assyria (Adad-Nirari I, Shalmaneser I). Even for the hospitality it had no hesitation in sending troops to the King of Khanigalbat, Shattuara II, which also boasted Aramaean forces; However, this coalition was defeated by the Assyrians.
His greatest success was to establish a peace treaty with Egypt, signed in the 21st year of Rameses II, who is known as acadia and Egyptian, drafted and that it would enable a lasting peace for almost a century, only broken by the presence of the peoples of the sea. 1268 BC Treaty was later banned with the marriage of a daughter of Khattusilis III with Rameses II (Princess Naptera - in Egyptian Maathorneferure-, much praised by the Pharaoh). The intrigues that took place that were never cut violently by the Hittite King Mursilis III from exile are also known. In addition, treaties signed by Khattusilis III with the aforementioned Benteshina, Prince of Kadesh and Amurru King and the Prince of Mehri, just like the decree that established for the inhabitants of Tiliura (do Kelkit-Kay?), population in the Northeast, have been preserved in contact with the dangerous gasgas. He signed a commercial Treaty with Niqmepa of Ugarit.
A King's close collaborator was his wife Pudu-Khepa, present in many official events and international documents (shown in the Treaty with Egypt); It was also Kurunta, responsible for attacks that could come from the West. Khattusilis III was a devout King who built temples and composed prayers to the Hittite gods, as well as his autobiography, of great historical value. At death, and given to his son Tudkhalijas IV was underage, the Government passed into the hands of Pudu-Khepa, the great Queen, who acted as Regent.