"...Better still, of course, is to shoot him while escaping. A couple shots to the guts, then benign neglect as he slowly bleeds to death..." Done correctly, execution by gut-shooting does not result in death by hemorrhage.
Death comes, at the end of an protracted period of agony, of peritonitis.
Hmm... well I read somewhere that Mr Bin-liners kidneys were playing up... And I read some where else that kidney stones are one of the most painful condition to have (and long lasting). Now if he was captured he may have to be in such well guarded conditions that we won't be able to get a kidney dialyses machine to him... which would be rather unfortunate.. ;-)