Poor Osama!!

Three guys, a Canadian, Osama Bin Laden and Uncle Sam are out walking together one day. They come across a lantern and a Genie pops out of it.
"I will give each of you each one wish, that`s three wishes total," says the Genie.
The Canadian says, "I am a farmer, my dad was a farmer, and my son will also farm. I want the land to be forever fertile in Canada." With a blink of the Genie`s eye, `POOF` the land in Canada was forever made fertile for farming.
Osama Bin Laden was amazed, so he said, "I want a wall around Afghanistan, so that no infidels, Jews or Americans can come into our precious state." Again, with a blink of the Genie`s eye, `POOF` there was a huge wall around Afghanistan.
"Uncle Sam" (A former civil engineer), 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."
"Uncle Sam" says, "Fill it with water."