Fog,
Not saying your thoughts are wrong, but the Geneva Convention says if you remove a gov't, then you are responsbile for the population until a new gov't is installed.
I'll concede we made lots of errors, but in removing the Taliban, the gov't of Afghanistan, then as GEN Collin Powell eloquently stated; "you break it, you bought it".
So we had to do some nation building in order to install a new gov't.
But I totally agree that trying to make Afghanistan a democracy that craved a McDonald's and Starbucks on every corner is a bridge too far...
Geneva Convention ?? I've heard of that . . . but the trouble is no one we've fought since WWII has honored it in the least. Come to think of it, neither did the Japanese nor Germans in WWII for that matter. Matter of fact, I would venture that the Geneva Convention is one of the least observed international treaties of all time. It's great for signing ceremonies and cocktail party dilettantes, but no one fighting with arms has much use for it. Viet Nam was my generation's war, and I sensed clearly in 1967 while in-country that we could not possibly win that war the way we were fighting it - and I was an OCS puke, not some academy grad. We got 58K Americans killed & hundreds of thousands of Vietnamese wasted before we walked away from it. With pure perfect hindsight, we should have dropped a low-yield nuke on Kabul a few weeks after 9/11 and never put an American boot on the ground. Collateral damage? Sure. Catch hell at the UN? You betcha, but no dead American servicemen and probably less long-term death & mayhem inflicted on the people who live in that region we call Afghanistan. Like VN, we can't kill everyone in Afghanistan to save it for the few dozen people there who might be interested in having a Jeffersonian Democracy in the Hindu Kush. JMHO.