Pedro Martínez:  It's not the question that is difficult.  What I'm getting at is the type of evidence that would be available to take to court.  Unless I witnessed a terrorist act and saw who did it etc, all evidence will be circumstantial.  What I'm asking you to do is to name the kind of evidence you would expect the US to find.  I know they have evidence gathered on the more well known terrorists, but some of those guys are relatively unknown. But they were captured on the battlefield.  Seems to me, that fact alone is evidence.  But it seems you'd expect much more.  Like what?