torture

[Touchstone]

In many cases, I think torture is used as a means of revenge because the enemy or the information you're searching for is elusive.

I wouldn't say so much as a means of revenge, more out of frustration. The old "there's a ticking bomb hidden somewhere, where is it?" situation.

But the key point is that the torturers/potential torturers in such cases are in a compromised mental state. Their judgement will be impaired so restraints on their actions are especially appropriate.