Osama Bin Laden was amazed, so he said, "I want a wall around Afghanistan, so that no infidels can come into our precious state." Again, with a blink of the Genie's eye, 'POOF' there was a huge wall around Afghanistan.
President Bush, asks, "I'm very curious. Please tell me more about this wall."
The Genie explains, "Well, it's about 15,000 feet high, 500 feet thick and completely surrounds the country; nothing can get in or out----virtually impenetrable."
President Bush says, "Very impressive. Fill it with water."