Osama Bin Laden is Dead

That's my opinion. After seeing yet another videotape of al-Zawahri issuing public threats, it's pretty clear that Bin Laden is dead.

If he weren't, he wouldn't be able to resist the spotlight. He would have nothing to gain by not doing these tapes himself, and lots to gain by doing them himself. Why isn't he doing them himself?

Because he is dead.

That's the only logically sustainable explanation.