He was constantly threated by the Elamites, who he defeated at Halule.  
His reign was troubled by a tribal insurrection under the Chaldean Merodach-Baladan which led him to appoint Bel-ibni as sub-king to deal with the problems.  He was constantly threated by the Elamites, who he defeated at Halule.  He attacked Jerusalem, but did not sack the city and Isaiah described him as God's instrument, but didn't not condemn his actions.  His wife Naqai fathered his heir Esarhaddon, and he was known for his splendid palace: Shanina-la-ishu or "Nonesuch."  FTP, name this son of Sargon II who made Nineveh his capital and the destruction of whose armies is the subject of a Byron poem?
His reign was troubled by a tribal insurrection under the Chaldean Merodach-Baladan which led him to appoint Bel-ibni as sub-king to deal with the problems.  
Sennacherib