Steve Metz has published a valuable article.

[Steve the Planner]

Slapout9:

Rob, we don't have to leave a vacum we could redraw the boundries and annex it to surrounding countries or what ever we want

A lot more to that than meets the eye.

If current trends of regional disparities and distinctions were carried into the future in Afghanistan (ie, expanding a Tajik/Uzbek national army to suppress Pashtun districts, north and west desires for natural resource exploitation & industrialization, election split), there may come a time when the "bounds" of Afghan interests are, of themselves, broken.

Steve