I believe that the power to declare war is most important in limiting the powers of the national government in regard to the rights of its citizens, but that it does not require Congress to give its approval before the president uses force abroad. I do not believe that the framers of the Constitution understood the power to declare to mean "authorize" or "commence" war. That does not mean that the separation of powers or checks and balances will not work.

Al Qaeda operates by launching surprise attacks on civilian targets with the goal of massive casualties. Our only means for preventing future attacks, which could use WMDs, is by acquiring information that allows for pre-emptive action.

The United States is at war with the al Qaeda terrorist group. Al Qaeda is not a nation-state and it has not signed the Geneva Conventions. It shows no desire to obey the laws of war; if anything it directly violates them by disguising themselves as civilians and attacking purely civilian targets to cause massive casualties.

Unlike previous wars, our enemy now is a stateless network of religious extremists. They do not obey the laws of war, they hide among peaceful populations and launch surprise attacks on civilians. They have no armed forces per se, no territory or citizens to defend and no fear of dying during their attacks. Information is our primary weapon against this enemy, and intelligence gathered from captured operatives is perhaps the most effective means of preventing future attacks.

Once the attacks occur, as we learned on Sept. 11, it is too late. It makes little sense to deprive ourselves of an important, and legal, means to detect and prevent terrorist attacks while we are still in the middle of a fight to the death with al Qaeda.

President Bush and his commanders announced early in the conflict that the Conventions applied.

Congress's definition of torture in those laws - the infliction of severe mental or physical pain - leaves room for interrogation methods that go beyond polite conversation.