Understanding Where we are in Afghanistan
The following from Foreign Policy is worth a read: There Is No War in Afghanistan.
Ever since the Taliban government was toppled in late 2001, the heart of the strategic problem that has confronted the United States and its allies in Afghanistan has been the definition of victory: How does this end? We would all be better off if we first asked what “this” is. While Afghanistan is a war of sorts, it is not the sort of war in which there is likely to be a decisive moment of victory. Rather, Afghanistan is best described as an armed policing operation.
The whole piece is worth a read.