A revealing paragraph in Bob Kaplan's superb piece on Afghanistan in the new Atlantic:
The very prospect of some success by July 2011 increases the likelihood that U.S. forces will be in Afghanistan in substantial numbers for years. In effect, the proficiency of the American military causes it to be overextended. British Major General Richard Barrons, a veteran of the Balkans and Iraq now serving in Afghanistan, told me he learned during the most depressing days in Baghdad that “the long view is the primary weapon against fate.” If you are willing to stay, you can turn any situation around for the good. But that is an imperial mind-set, with its assumption of a near-permanent presence, which today’s Washington cannot abide, even as its own strategy drives toward that outcome.