I think it's of critical importance we get to the bottom of this issue. We need full disclosure in the matter and the bringing to account - prosecutions if at all possible - of any people involved in complicity with torture. I suspect there was at least a turning of a blind eye at very high levels.
Davis's statement ends with this moral summation:
'The battle against terrorism is not just a fight for life; it is a battle of ideas and ideals. It is a battle between good and evil, between civilisation and barbarism. In that fight, we should never allow our standards to drop to those of our enemies. We cannot defend our civilisation by giving up the values of that civilisation.'
Yes, but I would add a more pragmatically self-interested rationale. Our government mustn't be allowed to get anywhere near torture. It's not a precedent we, as citizens, can afford to tolerate.