This video concludes that at least some Palestinians are descendants of the ancient inhabitants of Palestine who were Jewish. This is backed up with genetic research done in Israel. One wealthy Jewish entrepreneur is touring Palestine distributing leaflets explaining the findings in the hope that the two sides can be brought together.
This reinforces the views of Shlomo Sand, whose book, The Invention of the Jewish People, I have reviewed in another post.
Though this might provide irony to the takeover of Palestine, I doubt that it will change things a bit. The fact is that each of us is equally human, brothers and sisters to begin with, yet we fight. So sharing more inconsequential things, more recent lineages, will hardly create a breakthrough. Just ask the Europeans whose tribes fought for centuries while sharing a religion.
I think it would be fair to say that human beings look for ways to distinguish themselves from others such that even a uniform group will, before long, find ways to define "us" and "them".
The issue for the United States is the way it supports one side in Palestine while hardly recognizing the other.