I could settle for a military tribunal except that his crimes were really not directed against us. Ideally he would be tried by the Afgan government but we know that would just a kangaroo court so perhaps the Hague or some other international body would be more appropriate. If you are going to suggest that he be tried for his role in supporting Al-Qa'ida and 9/11 then he probably should be tried in a US court. A military tribunale would really only be appropriate if we were going to try him for crimes committed against our forces in Afghanistan and / or Pakistan.