Reason 8 (really this only one is sufiicient to justify "palestine land" in Jews possession). When you start the war and lose it, your adversary takes part or all of your land, happened 100's times trough known history. The last exemple is Germany in last century. They started 2 worldwide wars lost both and as a result had theirs teritorry severly trimmed (eastern teritories to Poland, western to France). Nobody today questions this status quo.
So when Arabs started 3 wars with Israel in the last 50 years, were badly beaten in matter of days, Israeli "occupied" teritories belong now to Israel and nobady should question that. This one reason is sufficient for Israel to keep all the land.
An excellent post. Anyone who thinks that Israel should return the Golan Heights because it wasn't theirs prior to the wars must neccessarily believe that Prussia should be returned to Germany.