Around 930 BCE, the kingdom split into a southern Kingdom of Judah and a northern Kingdom of Israel. From the middle of the 8th century BCE Israel came into increasing conflict with the expanding neo-Assyrian empire. Under Tiglath-Pileser III it first split Israel's territory into several smaller units and then destroyed its capital, Samaria (722 BCE). An Israelite revolt (724–722 BCE) was crushed after the siege and capture of Samaria by the Assyrian king Sargon II. Sargon's son, Sennacherib, tried and failed to conquer Judah. Assyrian records say he leveled 46 walled cities and besieged Jerusalem, leaving after receiving extensive tribute.

When did the kingdom split?