Secret Prisons and "Tough Interrogation"

A quote from ABC news, which got this article from the Associated Press: "President Bush on Wednesday acknowledged for the first time that the CIA runs secret prisons overseas and said tough interrogation forced terrorist leaders to reveal plots to attack the United States and its allies." Secret prisons and "tough interrogation" ... growing up I was taught that these were among the evils of communist Russia. I feel that from a Christian perspective, I have no choice but to question these tactics. The only argument defenders of such tactics have is that they are necessary to save lives and protect our country. My question, what good does it do to save our lives and country, if we lose our souls in the process?