The Assyrian captivity (or Assyrian exile) is the period in the history of Ancient Israel and Judah during which several thousand Israelites of ancient Samaria were resettled as captives by Assyria. The Northern Kingdom of Israel was conquered by the Neo-Assyrian monarchs, Tiglath-Pileser III (Pul) and Shalmaneser V. The later Assyrian rulers Sargon II and his son and successor, Sennacherib, were responsible for finishing the twenty-year demise of Israel's northern ten-tribe kingdom, although they did not overtake the Southern Kingdom. Jerusalem was besieged, but not taken. The tribes exiled by Assyria later became known as the Ten Lost Tribes.