Since the beginning it's been the case that the stronger hurt the weaker and everyone says but we're the good guys! Our GOD/CONSTITUTION/WEALTH/STRENGTH/VENGEANCE etc (insert whichever is appropriate) makes us right.
In view of this particular subject matter I thought you'd be interested in what none other than Harry S Truman had to say at about the time he signed papers to support the establishment of what would become Israel.
Go to http://www.thesmokinggun.com/archive/trumandiary1.html