Personally, I don't think Osama, or the Talibums care what the rest of the world thinks, that's part of the nature of fanatics. It wouldn't surprise me if they had a boobytrap somewhere. I hope I'm wrong, but it wouldn't surprise me. But I think (hope) that our leaders are considering this option as well.
I can't be sure, of course, but at least some of the Talibums are political animals. Look at the successful propaganda campaign they ran.
The wallabee walhabists wasnt to rule the world. That'll take political animals. It's hard to take over a country when the entire world hates you. So, yes, I think that at least some of them might be interested in what the Arab world, at least, thinks.
The really insane, lunatic fringe - of course, the whole Talibans is the lunatic fringe - of the Taliban might try something. They seem pretty undisciplined. I doubt their "leaders" could control them, even if they wanted to.