If FN have  right to tell anyone to take a hike, it is because they were here first, and so it is based on the principle that the people who live in a country have the right to decide who will join them.

So the same principle should apply to any other people and country: those who already live there have a right to decide who will join them.

No one has a right to decide they will live in a country already inhabited by other pepple, if those people do not want them.

We can't rewrite history to apply this principle retroactively, the whole world would have to be rearranged, but we sure can apply it from now on to avoid future conflicts.

Everyone has a right to feel their home is securely theirs, and that not anyone can decide they like it better than theirs and appropriate it with their leaders' blessing.