Well, I think there exists a TRUE "right" and a TRUE "wrong"--culturally objective.
Murder, rape and theft are universal "wrongs".
They are culturally accepted under certain circumstances, but "accepted" doesn't mean "right".
When a country kills people based on gender, race, or --I don't know, color of eyes or whatever, it's objectively "wrong". I guess they spin it as we do the death penalty--that the woman who was raped was an adulteress, and she knows that the penalty for adultery is death, so she violated the rules, and the punishment fits the crime.
But you and I BOTH know that those rules are cultural ones, not "right". It is never "right" to kill the victim of a crime. Is it?
PS--I don't think we are necessarily "right" to impose our will be force, but through the UN and sanctions, yes.