Also, you write: "Most of the moral decisions western society has taken about how we show act are on the principles of first doing no harm and respecting the rights of the individual."
Well, much as I would love to live in that world, I don't think it's the one we live in. I mean yes, theoretically this might be true, but practically speaking, there have been plenty of wars involving the west where I don't think many people will say that the West was 100% in the right. There are plenty of situations where we don't care about individual rights that much. E.g. most libertarians will say that basically the entire rise of the welfare state is explicitly against individual liberty. I'm not even sure most socialists will disagree with that!
Most importantly, even if the general principle is to try not to do harm, it still doesn't really solve the torture "dilemma". There certainly are some pacifists who cling to "do no harm" as a founding principle, but they're not considered to be the standard view (nor do they claim they are).