Philosophical ramblings are irrelevant when it comes to international law.
International law is irrelevant when it comes to people's perception of truth.
So the only truth is people's perception of truth?
Yes. As humans are inherently ideological and subjective beings, that is all we will ever have.
So killing you is not an inherently immoral act and should be justified under someone's ideological standpoint?
That's exactly my point, your truth is a reflection of your world view and your ideology.
It is silly to assume one's truth as universal and doing so kills all nuance.