"Despite the assurances made in the November declaration, Palestine’s subsequent history was to show that the wishes of the vast majority of the indigenous people of Palestine counted for little. Their land had been promised to another people by a foreign Government, which, at that time, held no sovereign rights over Palestine. Citing these factors, several authorities have asserted that the Balfour Declaration had no binding or legal effect beyond being a statement of the intentions of one Government"
Straight from the UN library,