After we're done in Afghanistan, we should relocate all the survivors into temporary housing and then rebuild the flatland into a new modern city. This city should be named United Nations City and become the new home of the United Nations. Then the UN can relocate out of New York City and into a region that is centrally located between Europe, Asia, and Africa, in the heart of an historically troubled region.
Either do away with Afghanistan completely and divide the land amongst the bordering countries, or create a new international United Nations zone that is independent of any nation and occupies the former Afghanistan. Either way, the UN moves out of New York City. Then turn the old United Nations building into either a World Trade Center annex (ot even has dock facilities) or low-income housing.
Think of jobs for the people of Afghanistan. They can learn the construction business like Bin Laden did, or they can learn service-related skills to support the new businesses that will emerge. Bringing the UN to that region will offer a wealth of possibilities to the locals, as well as create a new "World Diplomatic Center" that is more easily accessible accessible to many people.
And as an added benefit, would Bill Clinton still want to be Secretary General if the UN were relocated to Kabul?
-PJ