and it sure ain't this...
My fear the last two years was that the booosh regime was doing all it could to dig whomever took over afterwards into wars that would take more troops and money to figure out. Sadly this seems to be the case.
The US rushed into two wars with no real endgame...other than some neo-con dream of "democracy". Focus on Afghanistan shifted (if there ever was a focus) and instead of going after those who attacked this country, our military became bogged down in a tribal war...even worse, in the middle. Taliban were equated with Al Queda...and many were told that the war had been "won". Yet our troops remained. It's been a nightmare that continues and the solution becomes murkier and murkier.
It can be argued that if the invasion had caught bin Laden or, as some claim, it's diminished Al Queda's ability to launch another attack on US Soil, then it's mission accomplished and if we bug out without resolving this it makes us more vulnerable. As this view is taken, the involvement will continue.
What President Obama needs is to get a focus here...and not sure he is capable with so many other things diverting attention. The other problem was a non-existant State Department for 8 years...especially under Rice. Restoring credibility and coordination is taking time...meanwhile the situation inside Afghanistan erodes and our military is caught in the middle of tribal wars.