No they are there legally. As was shown to you previously by Odysseus. Jordan gave up their claims.
But then you already knew that.
And you've still not addressed that pesky issue about U.N. Resolution 181 from back in 1948.
Why is that?
Because USGR 181 was a purely advisory resolution which required both Jew and Arab acceptance in order to take effect.
Arabs didn't understand why one-third of the population of Mandate Palestine was "given" 55% of the land.
In retrospect, the Arabs should have chosen earlier western inflicted partition plans:
http://en.wikipedia.org/wiki/United_Nations_Partition_Plan_for_Palestine#Earlier_proposals_for_partition"The League of Nations granted Britain a mandate over Palestine as part of the Partitioning of the Ottoman Empire following World War I. A British census of 1918 estimated 700,000 Arabs and 56,000 Jews.[6]
"In the 1917 Balfour Declaration, the British foreign secretary stated that the British government viewed “with favour the establishment in Palestine of a National Home for the Jewish people [with the understanding that] nothing should be done to prejudice the civil and religious rights of the existing non-Jewish communities in Palestine . . . .†.[6]
"Neither partition nor statehood was mentioned as the means of accomplishing the National Home. Lord Curzon, who later succeeded Balfour as foreign secretary, wrote a memorandum expressing concern about what would become of the Arab inhabitants of Palestine who had '
occupied the country for the best part of 1,500 years' and would 'not be content either to be expropriated for Jewish immigrants, or to act merely as hewers of wood and drawers of water to the latter.' [6]
In 1937, the Peel Commission proposed a Palestine divided into an Arab state, a much smaller Jewish state (about 15%), and an international zone. The Arab leadership rejected the plan.
"The two main Jewish leaders, Chaim Weizmann and Ben Gurion had convinced the Zionist Congress to approve equivocally the Peel recommendations as a basis for more negotiation.[7][8][quotations 1][9]
"These proposals contained provisions for the relocation of Arab population to areas outside the borders of the new Jewish state, modelled on the population exchange between Greece and Turkey; they were also rejected by the Arab side."