As there is no apparent thread devoted to discussion of this issue, I thought perhaps we ought to have one.
There is no question now as to whether or not torture has occured, under both American and Brit commands. According to one Republican Senate commissioner, the American investigations reveal that acts have included not merely abuse and degradation and other such contraventions of the Geneva Convention, but rape and murder as well. We have been alerted by this same commission that pictures (and videos) evidencing acts even worse than what we've so far seen are in the possession of the military and can be expected to find their way to the world press. Further, it may well be the case that such acts are not correctly portrayed as acts of a small group of pathological individuals. Rather, a more plausible and coherent portrayal of what has gone on is more properly seen as a broad and purposeful disregard for the Geneva Conventions.
(see here)
The damage to American and British reputations in the world is incalculable. Where we have sought to encourage repressive states or repressed populations to adopt our set of values and political notions, we have had four compelling and factual (if not perfect) arguments to present; our wealth, our respect for sovereign boundaries/self-determinism, our adherence to multi-lateral agreements and our antipathy to the notion of unilateral exercise of power, and our traditions of human and civil rights. A fifth chracteristic, our military strength and dominance along with our willingness to use it other than strictly defensively, has been justifiable only as a consequence of the above arguments or facts about us.
The consequences may be profound, and seem likely to be. Future circumstances which may arise, such as an instance of ethnic-cleansing or significant human rights violations in some corner of the world, or some instance of actual build-up of WOMD in the hands of a dangerous state, will now be immensely more problematic for three reasons. Our credibility regarding our intelligence and our honesty regarding that intelligence is deeply damaged. Secondly, our status as a moral good guy is now profoundly undercut. Thirdly, our reputation as a body which might go in to a problem area and help, rather than make things even worse, has been equally undermined.
More immediately, our problem with the Muslim world has just been increased exponentially. It seems doubtful that Usama himself could have designed a much more agreeable turn of events towards his goals of fomenting hatred towards the West.