Not entirely true. Allah has nothing to do with being a terrorist. Their religion does not make them a terrorist. Where they come from does not make them a terrorist. These are the stereotypical views that many people uneducated about the conflict have. I do agree Khalid Sheikh Mohammed the man responsible for the attacks is sitting at Guantanamo Bay right now. However that man is only responsible for one attack. Do you remember the USS Cole bombing, or the US Embassy bombings, the WTC was attacked previously in the early 90's.
We are fighting a Global War on Terror, because as I stated earlier, the country of origin does not make the person a terrorist. You may not know this but a U.S. citizen was captured in the Middle East - John Walker Lindh.
Your last statement, 'what ever else known terrorist is probably dead' is falsely guided as well. Terrorists do not make themselves known, that is their entire purpose. They look the same, act the same as everyone else. They do not wear uniforms that say AL QUEDA or TALIBAN on them. That's what makes the conflict in the Middle East so difficult - you cannot easily discern from a civilian or a terrorist. A final note, the way that these organizations are put together, the chain of command is unknown by the members. They do this for a simple reason, when captured, they don't just lie about not knowing who else is a member or who their mission leader is, they actually do not know. the US knows that they operate this way and it makes gathering useful intelligence quite difficult and time consuming. On the day of the attacks, the men hijacking the planes knew that they would be taking over their plane with another member, and knew what their target was. However they had no idea that three other planes were going to be hijacked that day.