Around the 9th century, Assyria, Babylonia's neighbor, was a major political power yet they made no real threats against Babylonia. They were even treaties signed showing mutual respect between Assyrian and Babylonian Kings. At one point a revolution broke out in during the reign of Marduk-zakir-shumi I, and Shalmanaser III (858-824 BC) of Assyria came to the aid of the Babylonian King and helped him regain his throne. But it wasn't long before friction developed and hostilities began to break out. During this time Assyria was the weaker of the two powers.