Entitlements are antithetical to equality. Continually attempting to right wrongs from the past simply carries them forward.
( https://en.wikipedia.org/wiki/Investor–state_dispute_settlem... )
That's sort of how the world works. If you can't defend it (through power and/or political will - you have strong friends that you have a mutually beneficial relationship with) then it's not your land. There's literally no group of people that have lived on some piece of land since the dawn of humanity. In fact there have been untold thousands of groups of people wiped off the earth because another group decided they wanted to live on the land they once lived in.
C'est la vie?!
Is that what you'd say if a few guys with guns came and pushed you out of your home, so that they can live there? Historically, it's correct: that's how the world works.
Now if a few guys with guns pushed me out of my home my nation state would send more guys with better guns to remove them and my property would be back in my possession.
Hey, at least you're honest.