If they want to make an American Hiroshima, they better damn well be prepared for an "Islamic Atlantis". Nuke them until the Arabic tetonic plate sinks into the ocean.
It's been well known around DC and other circles that soon after 9-11, Bush sent a message to Osama that should another attack take place on his watch, that Mecca would be turned into a sheet of green glass.
Odds are that Osama is waiting for Bush to leave office.