A little later the Kashku, together with some Aramaeans, broke into Shubarti, then subject to Assyria, and took possession of a part of it. The majority of these invasions had, however, no permanent result: they never issued in the establishment of an empire like that of the Khâti, capable by its homogeneity of offering a serious resistance to the march of a conqueror from the south. To sum up the condition of affairs: if a redistribution of races had brought about a change in Northern Syria, their want of cohesion was no less marked than in the time of the Egyptian wars; the first enemy to make an attack upon the frontier of one or other of these tribes was sure of victory, and, if he persevered in his efforts, could make himself master of as much territory as he might choose. The Pharaohs had succeeded in welding together their African possessions, and their part in the drama of conquest had been played long ago; but the cities of the Tigris and the Lower Euphrates--Nineveh and Babylon-were ready to enter the lists as soon as they felt themselves strong enough to revive their ancient traditions of foreign conquest. The successors of Agumkakrimê were not more fortunate than he had been in attempting to raise Babylon once more to the foremost rank; their want of power, their discord, the insubordination and sedition that existed among their Cossæan troops, and the almost periodic returns of the Theban generals to the banks of the Euphrates, sometimes even to those of the Balikh and the Khabur, all seemed to conspire to aggravate the helpless state into which Babylon had sunk since the close of the dynasty of Uruazagga. Elam was pressing upon her eastern, and Assyria on her northern frontier, and their kings not only harassed her with persistent malignity, but, by virtue of their alliances by marriage with her sovereigns, took advantage of every occasion to interfere both in domestic and state affairs; they would espouse the cause of some pretender during a revolt, they would assume the guardianship of such of their relatives as were left widows or minors, and, when the occasion presented itself, they took possession of the throne of Bel, or bestowed it on one of their creatures. Assyria particularly seemed to regard Babylon with a deadly hatred. The capitals of the two countries were not more than some one hundred and eighty-five miles apart, the intervening district being a flat and monotonous alluvial plain, unbroken by any feature which could serve as a natural frontier. The line of demarcation usually followed one of the many canals in the narrow strip of land between the Euphrates and the Tigris; it then crossed the latter, and was formed by one of the rivers draining the Iranian table-land,--either the Upper Zab, the Radanu, the Turnat, or some of their ramifications in the spurs of the mountain ranges. Each of the two states strove by every means in its power to stretch its boundary to the farthest limits,