UPDATE: Andrew Bacevich chimes in:
"What Afghanistan tells us is that rather than changing Washington, Obama has become its captive. The president has succumbed to the twin illusions that have taken the political class by storm in recent months. The first illusion, reflecting a self-serving interpretation of the origins of 9/11, is that events in Afghanistan are crucial to the safety and well-being of the American people. The second illusion, the product of a self-serving interpretation of the Iraq War, is that the U.S. possesses the wisdom and wherewithal to guide Afghanistan out of darkness and into the light."