The harsh facts about Afghanistan
The economic reality is such that the war in Afghanistan will wind down, as it is not sustainable. The Americans will eventually leave and so will the other international forces.
After over a decade of war, hundreds of billions of dollars in war effort, and loss of thousands of lives, there will be no victory for Americans or the international forces. There will be attempts, however, at making face-saving efforts to show some sort of victory but in reality there will be none.
Even now, Hamid Karzai cannot dare leave Kabul and even within Kabul, his movements are restricted to a limited area. Soon after the departure of Americans from Afghanistan, the puppet government of Karzai will fall because it cannot and will not sustain without the support of international forces.
The Taliban will return to Afghanistan in full force and will rule again. The drug trade will continue (as it has flourished even during a decade of war), the tribal system will continue, and harsh punishments will be meted out to those who will commit a crime. There will be no democracy but there will be Taliban.
You will say you have seen this before in the past. Well, open your eyes. It is not the past; it is, in fact, the future.
Welcome to the future.