The American postal service sent letters to Afghanistan after September 11 attacks. The letters were addressed to Osama bin Laden. NTVRU.Com reported that those letters were detected and their further shipment was delayed. However, the US Ministry for Justice did not allow to open the envelopes, because there was no reasonable evidence for that. The fact that the letters were addressed to the prime suspect was not considered as reasonable evidence, though. As a result, all those letters were mailed to Afghanistan with other letters and packages. The US Congress toughened the legal norms in the field of struggle with the international terrorism later. Now such letters can be opened and read. Who knows, what can be found there.
The Americans came to realise that they would have to either leave the region or weaken their presence there. It is Russia that is filling the vacuum now