Afghans Start to Take the Money and Run

In the year to March, $4.6 billion fled via the airport, a sum equal to almost one-quarter of the country’s gross domestic product. The year before, $2.3 billion in cash left via the airport. - Afghans Start to Take the Money and Run - businessweek
Damned by Riches: How Afghanistan’s Mineral Wealth Undermines NATO Mission - Nathan William Meyer