At least Ed Morrissey is honest about the time-frame:
If we hope to prevail, we will need a political commitment for more resources over a much longer period of time than most politicians have been willing to report. Michael Yon has insisted that means decades of Western involvement, to make sure that an Afghanistan we eventually leave will not slide back into the Afghanistan of the post-Soviet period, where radical Islam prevails and terrorist networks build central offices for attacks on the world. Either we commit to this fight, or we should pull out altogether.
I agree. The choice is between a form of empire in one of the most ungovernable places on earth or retreat and regrouping around a more sustainable (if no more guaranteed) strategy of damage-control.