Sargon II ( Akkadian Šarru-ukin "he [= the god] made firm the king", Arabic: ' reigned 722 – 705 BC) was an Assyrian king. Sargon II became co-regent with Shalmaneser V in 722 BC, and became the sole ruler of the kingdom of Babylonia in 722 BC after the death of Shalmaneser V.