I dont know whether to answer in terms of my previous atheism, or my present position of something akin to mysticism (grin)
As an atheist, and defining atheism as one who is intellectually oriented and thus incapable of taking many things on faith..... I think most intellectuals felt sorry for the plight of the Jews during WW2. They also felt a little angst for the fact that everyone knew what was happening to them but no one felt inclined to upset delicate balances (as they saw it) on their behalf. A lot of conflicted guilt.
I think it was inevitable that Zionist expectations were supported by that vast underclass who inevitably feel sympathy for those who are seen as underdogs.
You might as well think that there was no one there before the Jews moved back, as far as any popular concept of Palestine went in the minds of the vast majority of people. A few unwashed Arabs on camels and living in tents. Not very culturally unbiased, racist in fact, a mis-perception also perpetually reinforced by propaganda as it is still useful.
Many of the Allies and sectors of the American economic elite had supported Nazism in its opposition to unions and other threats to corporate control (even in some cases openly supporting suppression of the Jewish intellectuals who were perceived as socialists) they needed to somehow switch horses mid-stream in the mass consciousness.
Now add another factor, the perception that there was a need to control middle eastern oil, and the establishment of a Zionist state could kill two birds with one stone, increasing western military dominance and control of the region while at the same time appearing to be concerned with the human condition by giving the Jews a homeland.
Now that radical Islam is sweeping the world, I would guess that the powers that be are glad they played it out the way they did, Im sure they still wield all the strings, and dont intend to let Islam get stronger. They are making a lot of money by keeping the region subdued. They may influence islamic perceptions more than we realize just as they control Western institutionaized religions. The fundies are a tool not a power.
Net result, the economic elite still on top, a new group of victims to rape, and now the victims can all fight one another and remained divided and easily controlled. What a sad day it would be, my mystical side tells me, if the Jews and Arabs opened their arms and hearts to one another, and threw out the 'carpetbaggers'the 'Greeds' the 'eaters of the fat' who like vampires are sucking the blood of the people and the earth.