Tudhaliya IV

Tudhaliya IV negotiated a treaty with the kingdom of Amurru in Syria, securing its loyalty as a vassal state. The treaty helped maintain Hittite control over Syria against Assyrian expansion.

Tudhaliya IV commissioned the construction of the rock sanctuary at Yazilikaya near Hattusa. The sanctuary features reliefs of Hittite gods and the king himself, serving as a religious and ceremonial center for the Hittite state.

Tudhaliya IV fought the Assyrian king Tukulti-Ninurta I at the Battle of Nihriya in northern Mesopotamia. The Hittites were defeated, leading to the loss of Hittite territories in the Upper Euphrates region and a decline in Hittite influence.