The violent creation, perpetuation, and expansion of a state based on ethnic expulsion of the majority inhabitants has been central to Middle East dynamics ever since Israel was created by European and American Zionists in 1948 as a self-identified "Jewish State."
Israeli leaders and outside observers realized from the very beginning that the only way to maintain such a violently imposed, ethnically based nation-state was through military dominance of the region. For Israel to achieve this military dominance required two things:
(1) The creation of a military more powerful than all the others in the region combined. Israel has achieved this through a uniquely massive influx of US tax dollars and technology, occasionally purloined but largely procured through the machinations of its lobby. (Among other things, Israel has several hundred nuclear weapons, a fact almost never mentioned by American media or the American government.)
(2) The prevention of any other nation in the region from becoming a threat. Israel has attained this goal through several strategies: divide and conquer techniques, direct invasions and attacks (or pushing the U.S. to carry out attacks), and the propping up of despots who would openly or tacitly agree (sometimes in return for similarly large influxes of American tax money) not to support the rights of those oppressed and ethnically cleansed by Israel.