The Aramaean tribes are referred to, at various periods and by various peoples, not only as the "Suti", but also as the "Achlame", the "Arimi", and the "Khabiri". Ultimately they were designated simply as "Syrians", and under that name became the hereditary enemies of the Hebrews, although Jacob was regarded as being of their stock: "A Syrian ready to perish", runs a Biblical reference, "was my father (ancestor), and he went down into Egypt and sojourned there with a few, and became there a nation, great, mighty, and populous".[[408]]
An heroic attempt was made by one of the Kassite kings of Babylonia to afford protection to traders by stamping out brigandage between Arabia and Mesopotamia, and opening up a new and direct caravan road to Egypt across the Arabian desert. The monarch in question was Kadashman-Kharbe, the grandson of Ashur-uballit of Assyria. As we have seen, he combined forces with his distinguished and powerful kinsman, and laid a heavy hand on the "Suti". Then he dug wells and erected a chain of fortifications, like "block-houses", so that caravans might come and go without interruption, and merchants be freed from the imposts of petty kings whose territory they had to penetrate when travelling by the Haran route.
This bold scheme, however, was foredoomed to failure. It was shown scant favour by the Babylonian Kassites. No record survives to indicate the character of the agreement between Kadashman-Kharbe and Ashur-uballit, but there can be little doubt that it involved the abandonment by Babylonia of its historic claim upon Mesopotamia, or part of it, and the recognition of an Assyrian sphere of influence in that region. It was probably on account of his pronounced pro-Assyrian tendencies that the Kassites murdered Kadashman-Kharbe, and set the pretender, known as "the son of nobody", on the throne for a brief period.
Kadashman-Kharbe's immediate successors recognized in Assyria a dangerous and unscrupulous rival, and resumed the struggle for the possession of Mesopotamia. The trade route across the Arabian desert had to be abandoned. Probably it required too great a force to keep it open. Then almost every fresh conquest achieved by Assyria involved it in war with Babylonia, which appears to have been ever waiting for a suitable opportunity to cripple its northern rival.
But Assyria was not the only power which Babylonia had to guard itself against. On its eastern frontier Elam was also panting for expansion. Its chief caravan roads ran from Susa through Assyria towards Asia Minor, and through Babylonia towards the Phoenician coast. It was probably because its commerce was hampered by the growth of Assyrian power in the north, as Servia's commerce in our own day has been hampered by Austria, that it cherished dreams of conquering Babylonia. In fact, as Kassite influence suffered decline, one of the great problems of international politics was whether Elam or Assyria would enter into possession of the ancient lands of Sumer and Akkad.
Ashur-uballit's vigorous policy of Assyrian expansion was continued, as has been shown, by his son Bel-nirari. His grandson, Arik-den-ilu, conducted several successful campaigns, and penetrated westward as far as Haran, thus crossing the Babylonian caravan road. He captured great herds of cattle and flocks of sheep, which were transported to Asshur, and on one occasion carried away 250,000 prisoners.
Meanwhile Babylonia waged war with Elam. It is related that Khur-batila, King of Elam, sent a challenge to Kurigalzu III, a descendant of Kadashman-Kharbe, saying: "Come hither; I will fight with thee". The Babylonian monarch accepted the challenge, invaded the territory of his rival, and won a great victory. Deserted by his troops, the Elamite king was taken prisoner, and did not secure release until he had ceded a portion of his territory and consented to pay annual tribute to Babylonia.
Flushed with his success, the Kassite king invaded Assyria when Adad-nirari I died and his son Arik-den-ilu came to the throne. He found, however, that the Assyrians were more powerful than the Elamites, and suffered defeat. His son, Na´zi-mar-ut´tash[[409]], also made an unsuccessful attempt to curb the growing power of the northern Power.
These recurring conflicts were intimately associated with the Mesopotamian question. Assyria was gradually expanding westward and shattering the dreams of the Babylonian statesmen and traders who hoped to recover control of the caravan routes and restore the prestige of their nation in the west.
Like his father, Adad-nirari I of Assyria had attacked the Aramaean "Suti" who were settling about Haran. He also acquired a further portion of the ancient kingdom of Mitanni, with the result that he exercised sway over part of northern Mesopotamia. After defeating Na´zi-mar-ut´tash, he fixed the boundaries of the Assyrian and Babylonian spheres of influence much to the advantage of his own country.