JtS: At first I thought you had it exactly right, but as I think about it: Perhaps if he said it your way, it would make it all too clear that the Taliban know about bin Laden's guilt (they don't need any evidence) only because they are his direct and knowing accomplices, and you know what THAT means. It could be interpreted as hand him over before we blow you to smithereens. (Just a thought.)

(In other words: The phrase used was "I know he's guilty." Yours adds an extra allegation. That extra allegation has implications.)