Shalmaneser saw that he had again miscalculated; and, despairing of any immediate success, drew off his ships and his troops, and retired to his own country. He left behind him, however, on the mainland opposite the island Tyre, a certain number of his soldiers, with orders to prevent the Tyrians from obtaining, according to their ordinary practice, supplies of water from the continent. Some were stationed at the mouth of the river Leontes (the Litany), a little to the north of Tyre, a perennial stream bringing down a large quantity of water from Coele-Syria and Lebanon; others held possession of the aqueducts on the south, built to convey the precious fluid across the plain from the copious springs of Ras el Ain[14144] to the nearest point of the coast opposite the city. The continental water supply was thus effectually cut off; but the Tyrians were resolute, and made no overtures to the enemy. For five years, we are told,[14145] they were content to drink such water only as could be obtained in their own island from wells sunk in the soil, which must have been brackish, unwholesome, and disagreeable. At the end of that time a revolution occurred at Nineveh. Shalmaneser lost his throne (B.C. 722), and a new dynasty succeeding, amid troubles of various kinds, attention was drawn away from Tyre to other quarters; and Elulæus was left in undisturbed possession of his island city for nearly a quarter of a century. It appears that, during this interval, Elulæus rebuilt the power which Shalmaneser had shattered and brought low, repossessing himself of Cyprus, or, at any rate, of some portion of it,[14146] and re-establishing his authority over all those cities of the mainland which had previously acknowledged subjection to him. These included Sidon, Bit-sette, Sarepta, Mahalliba, Hosah, Achzib or Ecdippa, and Accho (Acre). There is some ground for thinking that he transferred his own residence to Sidon,[14147] perhaps for the purpose of keeping closer watch upon the town which he most suspected of disaffection. The policy of Sargon seems to have been to leave Phoenicia alone, and content himself with drawing the tribute which the cities were quite willing to pay in return for Assyrian protection. His reign lasted from B.C. 722 to B.C. 705, and it was not until Sennacherib, his son and successor, had been seated for four years upon the throne that a reversal of this policy took place, and war _à outrance_ was declared against the Phoenician king, who had ventured to brave, and had succeeded in baffling, Assyria more than twenty years previously. Sennacherib entertained grand designs of conquest in this quarter, and could not allow the example of an unpunished and triumphant rebellion to be flaunted in the eyes of a dozen other subject states, tempting them to throw off their allegiance. He therefore, as soon as affairs in Babylonia ceased to occupy him, marched the full force of the empire