Really that is why Truman had such a huge discussion with his Zionist group about it, and might I add General Marshall was very against it.
So was Albert Einstein.
True, people of intelligence were against it, those with foresight.
A sample of two is not sufficient for such an assertion. The reasons Marshall and the State Dep't had for their views involved "not offending the Arabs"... Given that gasoline is a critical resource for modern civilian life as well as for warfare, I think the ultimate reason is clear. And it's got nothing to do with 'justice' nor 'moral clarity', nor any supposed character of any group of people involved (except of course for the Americans deciding their actions on the basis of 'what gets us Americans the most advantage for the least effort' - which is pretty much a universal motive!).
By the end of the war, the Germans were pulling artillery pieces with horses again. They had pioneered 'coal gasification' - creation of fuels from coal - but it's extremely expensive and the high sulfur content of the German 'brown' coal is a further problem(
Synthetic fuel - Wikipedia, the free encyclopedia). The German war effort was also hampered by the lack of hard black coal - anthracite - which is necessary to turn iron into steel (
Met Coal 101 - Grande Cache Coal)
The US has much more coal, and much better for 'gasification' - but it's still very expensive and there's still the sulfur to be gotten rid of (
ASTM Standards for Sulfur Analysis of Fuels) So it's generally not very practical - but if the price of oil rises high enough, it will become competitive.
OK, change of digression: It's been said that 'our military is always fighting the last war'. And to some extent that's true: the commanders want to prevent making the same mistakes so they go over everything that happened to see how they could do it better next time. Only by 'next time' - the situation's not quite the same. (Which is why they do all those 'contingency' scenarios, like the US invading Canada - to try to have a plan available for ANYTHING)
Putting my two digressions together: Gen Marshall was interested in preventing a scenario where the US (or allies) would be forced to deal with the situation the Germans were in regarding fuel. The best way to avoid such a problem would be to maintain good relations with the AL nations, which also controlled most of the crude oil production.
As for Albert Einstein:
Political views of Albert Einstein - Wikipedia, the free encyclopedia
"
Einstein was one of the authors of an open letter to the New York Times in 1948 deeply criticizing Menachem Begin's Herut (Freedom) Party for the Deir Yassin massacre (Einstein et al. "
That, of course, is not 'being against the establishment of Israel' in any way shape or form.
That quote is from this context: "Einstein publicly stated reservations about the proposal to partition the British Mandate of Palestine into independent Arab and Jewish countries. In a 1938 speech, "Our Debt to Zionism", he said: "I should much rather see reasonable agreement with the Arabs on the basis of living together in peace than the creation of a Jewish state. My awareness of the essential nature of Judaism resists the idea of a Jewish state with borders, an army, and a measure of temporal power, no matter how modest. I am afraid of the inner damage Judaism will sustain—especially from the development of a narrow nationalism within our own ranks, against which we have already had to fight strongly, even without a Jewish state. ... If external necessity should after all compel us to assume this burden, let us bear it with tact and patience."[17]
In a 1947 letter to Indian Prime Minister Jawaharlal Nehru intended to persuade India to support the establishment of a Jewish state, Einstein stated that the Balfour Declaration's proposal to establish a national home for Jews in Palestine "redresses the balance" of justice and history.[23]
The United Nations did divide the mandate, demarcating the borders of several new countries including the State of Israel, and war broke out immediately. Einstein was one of the authors of an open letter to the New York Times in 1948 deeply criticizing Menachem Begin's Herut (Freedom) Party for the Deir Yassin massacre (Einstein et al. 1948) likening it to "the Nazi and Fascist parties" and stated "The Deir Yassin incident exemplifies the character and actions of the Freedom Party". The letter stated clear concerns for the future of Israel if the Freedom Party continued to gain power. When President Harry Truman recognized Israel in May 1948, Einstein declared it “the fulfillment of our (Jewish) dreams.”[24] Einstein also supported vice president Henry Wallace’s Progressive Party during 1948 Presidential election which also advocate pro-Soviet and pro-Israel foreign policy.[25]
Einstein served on the Board of Governors of The Hebrew University of Jerusalem. In his Will of 1950, Einstein bequeathed literary rights to his writings to The Hebrew University, where many of his original documents are held in the Albert Einstein Archives.[26]
When President Chaim Weizmann died in 1952, Einstein was asked to be Israel's second president, but he declined, stating that he had "neither the natural ability nor the experience to deal with human beings."[27] He wrote: "I am deeply moved by the offer from our State of Israel, and at once saddened and ashamed that I cannot accept it."[10]"
Nothing in the above even hints at the assertion that Einstein was opposed to Israel per se. His views did change somewhat through time, but the basic support of a Jewish homeland in Judea was always there (and that's what Zionism truly is): if Einstein were alive today, it's unclear whether he would still favor a 'binational' state (although Israel is closer to a 'binational' state than most critics are willing to acknowledge).
Certainly the Israelis of 1952 never imagined that Einstein was so against them as has been asserted! And while I try to never underestimate my fellow humans' propensity for complete stupidity - I really do not suppose they were so stupid as to offer him the presidency if he were really so opposed to their State.