Georgia has no right to force or even expect the South Ossetians to leave the area where they have been living for many hundreds of years. The South Ossetians do have a right to remain living there in freedom for however long they want.

If might makes right, and whoever has the most might can do whatever they want to whoever is weaker, then we really can't tell Russia it can't annex Georgia if it wants to. If might is the only right, Russia can do whatever it wants with Georgia. If might doesn't make right, then whatever rights the people of Georgia have to be free and independent and not subjugated by a larger more powerful country, the South Ossetians also have.