Ashur-uballit, with Assyrian power firmly established, tarts to make contacts with other great nations.

A time comes when the Kassite king in Babylon is glad to marry the daughter of Ashur-uballit, whose letters to Akhenaten of Egypt form part of the Amarna letters.

His messages to the Egyptians angers his Babylonian neighbor Burnaburiash II, who himself writes to the Pharaoh: “with regard to my Assyrian vassals, it was not I who sent them to you.

Why did they go to your country without proper authority?

If you are loyal to me they will not negotiate any business.

Send them to me empty-handed!” Yet the new Assyrian power cannot be denied, and Burnaburiash even marries the daughter of the Assyrian king.

This marriage will eventually lead to disastrous results.