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.

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.

Declarations of war have never been a constitutional requirement for military action abroad. The United States has used force abroad more than 130 times, but has only declared war five times - the War of 1812, the Mexican-American War, the Spanish-American War, and World Wars I and II.

The effort to blur the lines between Guantanamo and Abu Ghraib reflects a deep misunderstanding about the different legal regimes that apply to Iraq and the war against al Qaeda.

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.

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.

Punishing abuse in Iraq should not return the U.S. to Sept. 10, 2001, in the way it fights al Qaeda, while Osama bin Laden and his top lieutenants remain at large and continue to plan attacks.