Al Qaeda confirmed the death. We've had plane and train threats (about 5) every day since his death.
Most of the middle east didn't believe it, but once they found out it was true and we really had thrown his body in the ocean they became very angry.
Osama's son, Umar, even confirmed the death.
They probably had the body on ice and wanted to use it to boost american opinion when national opinion of america is at its lowest, for instance killing gaddafis son and grandchildren.
Oh please, a NATO missile killed them. We aren't leading the action in Libya.