The Assyrian army, led by Sennacherib's chief commander, launched an unsuccessful attack on the coalition forces near the city of Kish, bolstering the legitimacy of the coalition. However, Sennacherib also realized that the anti-Assyrian forces were divided and led his entire army to engage and destroy the portion of the army encamped at Kutha. Thereafter, he moved to attack the contingent at Kish, winning this second battle as well. Fearing for his life, Marduk-apla-iddina had already fled the battlefield. Sennacherib's inscriptions state that among the captives taken after the victory was a stepson of Marduk-apla-iddina and brother of an Arab queen, Yatie, who had joined the coalition. Sennacherib then marched on Babylon. As the Assyrians appeared on the horizon, Babylon opened its gates to him, surrendering without a fight. The city was reprimanded, suffering a minor sack, though its citizens were unharmed. After a brief period of rest in Babylon, Sennacherib and the Assyrian army then moved systematically through southern Babylonia, where there was still organized resistance, pacifying both the tribal areas and the major cities. Sennacherib's inscriptions state that over two hundred thousand prisoners were taken. Because his previous policy of reigning as king of both Assyria and Babylonia had evidently failed, Sennacherib attempted another method, appointing a native Babylonian who had grown up at the Assyrian court, Bel-ibni, as his vassal king of the south. Sennacherib described Bel-ibni as "a native of Babylon who grew up in my palace like a young puppy". War in the Levant After the Babylonian war, Sennacherib's second campaign was in the Zagros Mountains. There, he subdued the Yasubigallians, a people from east of the Tigris river, and the Kassites, a people who had ruled Babylonia centuries before. Sennacherib's third campaign, directed against the kingdoms and city-states in the Levant, is very well-documented compared to many other events in the ancient Near East and is the best-documented event in the history of Israel during the First Temple period. In 705 BC, Hezekiah, the king of Judah, had stopped paying his annual tribute to the Assyrians and began pursuing a markedly aggressive foreign policy, probably inspired by the recent wave of anti-Assyrian rebellions across the empire. After conspiring with Egypt (then under Kushite rule) and Sidqia, an anti-Assyrian king of the city of Ashkelon, to garner support, Hezekiah attacked Philistine cities loyal to Assyria and captured the Assyrian vassal Padi, king of Ekron, and