Christians and the use of Torture

I was intrigued by this topic on Christianity Today. Read on:

The "War on Terror" has challenged old rules of engagement. While Christian theologians of past centuries debated "just war" theories (assessing international conflicts in light of biblical principles of fairness), modern discussions focus on high-tech weapons that make armies obsolete and religious terrorism that ignores rules regarding non-combatants.

In the new psychological chess match of modern warfare, knowledge is critical. How will it be obtained? Is torture necessary to get insider information? Can we justify dehumanizing some to rehumanize society?