bin Laden is playing off the Afghanistan chessboard.
It's hard to play chess if you don't have a board. I can play chess in my head (blindfold chess?) but bin Laden or Hussein or whoever is responsible will find it hard to play terrorist chess without a country to support them.
bin Laden: 1.P-K4 (e4)
USA: 1. ... P-QB4 (c5)
(an oblique, but aggressive, approach.)