What PeacefulPete said, " What matters is how to resolve the stalemate of tit for tat violence that exists today." answers LUHE's 3 part last question to me very well.
The rest of his Post, above, explains why we cannot say any group has an overarching right to land, of course we must accept that people live where they do, but Ancient History of the Land or its inhabitants confers no right whatsoever, or you walk along a very rocky road !
I do firmly believe in America for the Native Americans, and Australia for the Aborigines, and the Isle of Wight for the offspring of the people who obviously lived there 8 Thousand years ago........ now I must remove my tongue from within my cheek before it gets stuck there !