Psamtik was a puppet ruler installed in Egypt by a monarch of this empire, who also put down rebellions from the Ethiopian kings Taharqa and Tanutamon.  Zakutu probably helped install the frequently ailing Esarhaddon on its throne. This empire's final defeat came when Harran fell, an act precipitated by the civil war that broke out between Sin-shar-ishkun and (*) Ashur-etel-ilani.  Those rivals were the twin sons of a man who campaigned against the Elamites and created a large library in its capital. Ashurbanipal revived the prominence of this empire after its slip into mediocrity following the death of Tiglath-Pilese
Psamtik was a puppet ruler installed in Egypt by a monarch of this empire, who also put down rebellions from the Ethiopian kings Taharqa and Tanutamon.  Zakutu probably helped install the frequently ailing Esarhaddon on its throne. This empire's final defeat came when Harran fell, an act precipitated by the civil war that broke out between Sin-shar-ishkun and (*) Ashur-etel-ilani.  Those rivals were the twin sons of a man who campaigned against the Elamites and created a large library in its capital. Ashurbanipal revived the prominence of this empire after its slip into mediocrity following the death of Tiglath-Pileser I. Defeated by the Neo-Babylonian Empire, for 10 points, name this ancient empire with capital at Nineveh.
Psamtik was a puppet ruler installed in Egypt by a monarch of this empire, who also put down rebellions from the Ethiopian kings Taharqa and Tanutamon.  
{Neo}-{Assyrian} Empire