One issue with international law (or even an individual nation's law) regarding PoWs and combat is that sometimes you get to gleefully ignore it when you're not fighting a "state" exactly. I think people are familiar enough with this concept by now that I don't have to give examples, even.
I think this has more to do with the debate happening now than anything.
The definition of PoW versus Prisoner gets incredibly murky when the subjects often a) do not claim nationality b) are not represented by any officially recognized governmental/semi-govermental body and c) claim allegiance to non-government organizations. Point C is the major one the U.S. focuses on deprive citizens of due process and treat them as PoWs; they don't even have to bother with people they apprehend outside the U.S.
Combine that with increased global awareness of issues...and it shouldn't come as a surprise that the public now debates what is a PoW exactly.
That's all pretty irrelevant to the "universal human rights" people....but universal human rights is also irrelevant to the majority of power players out there.
I do have a question for those favoring universal human rights though....the "classic text book villain" was mentioned, because they're always an easy target for harsh justice.
My question is this: In a world where we claim that all people, no matter how bad, get their basic human rights....what do you with a criminal that completely rejects humanity? That advocates the most barbarous, self-interested, evil behavior?
Do we force them to take their human rights, since human rights are inalienable, and feed them and keep them in jail while they spit on the rights we give them, cause mayhem and pain as a matter of course, and generally embody all the evil we loathe?
Under the argument of universal human rights, yes, you have to do that. Because even depriving someone who wants to be rid of their humanity represents a slippery slope, and the rights are so inalienable, you can't even willingly be rid of them.
That's not a world I believe in. I believe in good and evil, with various shades in between. At least, I believe in pure evil. I believe in pure cruelty. I believe in human beings who, in terms of their world view or public action, do not hold the value of human life dear at all. I don't believe all human rights are inalienable....how can I when some of the very people it applies to don't believe it for a minute? For universal human rights to be a species-wide truth, and not just another political point of view, it has to be recognized at a very basic level...ala self-defense, by everyone.
And it never will be. Universal human rights are in direct opposition to how the world has operated up until now; namely by selectively depriving others of their human rights when it's opportune.