........ Yes US soldiers are the best in the world, that's why 8 years in Afghanistan with half of the western countries forces, and all the resources availability they can ask, still they can't control it [Afghanistan]. Bravo ! ......
Controlling a country is never purely a military issue. You always need viceroys / mayors like Karazai to provide the political muscle. Failure to bring peace in Afghanistan must be viewed with some additional measures. And one measure is that "Afghanistan cannot be controlled by Afghanis". Sometimes sadly one thinks that even God has forsaken this miserable land.
Add another factor of porous borders of Afghanistan and you got the most vicious cocktail of instability for this hapless country called Islamic Emirates of Afghanistan.
May God help us, and the USA to cure this cancer in our neighborhood.