Letter of Piha-walwi

The Letter of Prince Piha-walwi of Hatti to King Ibiranu of Ugarit is a Hittite diplomatic text of the 13th century BC.
The letter is a sample of diplomatic correspondence between the Hittites and their vassal states in Syria. Written in the Akkadian language on a clay tablet, it was found in the archives of Ugarit, excavated at Ras Shamra, Syria.
Piha-walwi, apparently a high-ranking Hittite official holding the title of prince, rebukes King Ibiranu of Ugarit for failing to seek an audience with the Hittite king, presumably Tudhaliya IV. He demands that Ibiranu rectify this immediately by sending messengers with gifts for both the king and Piha-walwi himself:
Ibiranu seems to have complied, as in another letter, the Ugaritic ambassador to Hattusa warns Ibiranu that the Hittite king was offended by the inferior gems he received, recommending that the king expects to be presented with lapis lazuli.