It appears that all of a sudden, bin Laden is against "martyrdom". In the following article , he apparently says, if the Americans execute KSM, he will kill any Americans he is holding. He is clearly holding the US soldier for this purpose.
From the Quran: sura 4:74 "To him who fighteth in the cause of Allah - whether he is slain or gets victory - soon shall we give him a reward of great value".
Footnote 469: "Dying in doing your duty is the best means of reaching Allah's mercy".
So it seems bin Laden takes the view, the same as all muslim RULERS, that these exhortations are just applicable to the footsoldiers or "little people" of islam, and not to THEM!
Or he's got his fist clamped securely round Obama's balls.
A New Dark Age Is Dawning