I want to be honest: this is the toughest issue we will face. We are going to exhaust every avenue that we have to prosecute those at Guantanamo who pose a danger to our country. But even when this process is complete, there may be a number of people who cannot be prosecuted for past crimes, but who nonetheless pose a threat to the security of the United States. Examples of that threat include people who have received extensive explosives training at al Qaeda training camps, commanded Taliban troops in battle, expressed their allegiance to Osama bin Laden, or otherwise made it clear that they want to kill Americans. These are people who, in effect, remain at war with the United States.

As I said, I am not going to release individuals who endanger the American people. Al Qaeda terrorists and their affiliates are at war with the United States, and those that we capture - like other prisoners of war - must be prevented from attacking us again. However, we must recognize that these detention policies cannot be unbounded. That is why my Administration has begun to reshape these standards to ensure they are in line with the rule of law. We must have clear, defensible and lawful standards for those who fall in this category. We must have fair procedures so that we don't make mistakes. We must have a thorough process of periodic review, so that any prolonged detention is carefully evaluated and justified.

I know that creating such a system poses unique challenges. Other countries have grappled with this question, and so must we. But I want to be very clear that our goal is to construct a legitimate legal framework for Guantanamo detainees - not to avoid one. In our constitutional system, prolonged detention should not be the decision of any one man. If and when we determine that the United States must hold individuals to keep them from carrying out an act of war, we will do so within a system that involves judicial and congressional oversight. And so going forward, my Administration will work with Congress to develop an appropriate legal regime so that our efforts are consistent with our values and our Constitution.