Don't worry, the radical jihadists haven't risen up to the extent Bin Laden anticipated after 9/11 so I don't think anyone is planning on a worldwide religious war that will exterminate 20% of the earth's population. Ever read any worthwhile references on what Bin Laden expected 9/11 to achieve?
"... so I don't think anyone is planning on a worldwide religious war that will exterminate 20% of the earth's population. "
Reading the threads here it appears that there are quite a few fools who believe that it would be a good idea.