10s of thousands of our military are water-boarded in survival training. It's actually a mental stressor and not likely to cause permanent physical damage.
Waterboarding: A SERE-ing Experience for Tens of Thousands of US Military Personnel | Human Events
On the OP scenario ---
I would have to TRY to break the suspect in order to protect 100s of thousands or millions of lives. Sorry, but when the dirty bomb explodes and radioactively contaminates downtown Chicago for the next 1000 years, I'm gonna regret living if I didn't push for information. I don't know how anybody could live with the guilt of not trying.
There ARE possible scenarios where you need to push for ANY leads. Good, bad or indifferent.
And --- the media and the public will SKEWER the people in charge if it's known they had a conspirator in custody and DID NOT attempt to save those lives and the 1000 years of radioactive Chicago..
What this all comes down to is INTENT and the backlash from the RESULTS.
If the intent of the Torture was to simply inflict incredible pain to someone you have hatred for, then yes, it is simply barbaric.
But, in the scenario of saving life at any and all cost, although still barbarism, it is a case of need and not wanton blood lust. To an absolutist there is not difference, but reality is far different.
The difference is the failure of legal interrogation tactics on a person known to have information that, if given, can save thousands, if not millions of life's.
The faux outrage by some on this thread reminds me of the story of the town drunk who showed up at his usual bar dressed in a fine suit and with a new haircut. He orders Martinis instead of beer and proceeds to get drunk. The bartender asks him "what's up with the suit and Martini's" and the drunk responds that he's running for Congress because it's not what's inside me that matters, it's what you look like on the outside.
I wrote about this on another thread. There would be two results should the United States Government approved this in this specific scenario:
First. The torture (and I will not shy away from the use of the word) gets the desired results and the bomb is found and disarmed.
The news would be filled with stories of just how many life's were saved. Stories of those that would have perished, the single Mother, the Teacher about to retire, the retired, the sick, the poor, the Democrats, the Republicans, Young Married couple with their child. There would be 24/7 coverage of the economic damage the blast would have created and the recession/depression it would have caused, and the administration and those that applied the torture would be applauded as hero's, not only here, but in the entire civilized world as the world wakes up to the now real possibility that this could soon happen to them as well.
Those that opposed the use of torture to accomplish the resulting savings of life would be ridiculed. They would not dare show their face or voice their opinions in fear of looking the fool.
Second: The torture fails and the bomb goes off killing many thousands of people, maybe millions. The economy goes into a tailspin. War is declared on each and every nation known to harbor these terrorist groups, not only by the United States, but by every nation that could fall victim by the same act by those groups. The world becomes a very chaotic place in the matter of days.
What was done to the individual that had the information, but refused to supply it, becomes unimportant as the world try's to come to grip with what happened and tries to restore some semblance of order.
Again, those that oppose the use of torture would not dare to open their mouths as thousands of their fellow countrymen are being put to rest, and thousands more, maybe millions more are being treated and are dying from the fallout that later occurred. The people would be far more interested in where their next meal was going to come from, what was happening with the economy and watching their Sons and Daughters go off to War to seek justice for what just happened.
The dude that was tortured, and the approval of such would lay at roughly 15,000 on the list of concerns that the American people would have at that point and for decades in the future.
If all that is important to you is the appearance of being decent, while those around you die, then those that would oppose the use of torture as a last resort, are no different than the drunk in the bar that I referenced earlier and just as shallow in thought.