Failed campaign

With only small successes during campaigns in northern Babylonia from 625–623 BC and more southern cities, such as Der, joining Nabopolassar, Sinsharishkun led a massive counterattack in 623 BC. Though this counterattack was initially successful and Sinsharishkun might have been ultimately victorious, he had to abandon the campaign due to a revolt in Assyria threatening his position as king.