I concur with the comments pointing out the senseless loss of American troops in Afghanistan. It went on and on. There were no goals. We accomplished nothing. I am not suggesting we should have stayed or even went there in the first place without a national declaration of war by Congress.
If we had been willing to declare war and prosecute that war, clearly defining what we were trying to achieve, it should have been over in the summer of 2002.
I refer you to the wartime leadership exhibited by the Allies during WWII. There was no reason to think that Japan would ever surrender and yet we were on track to use as much force as necessary to achieve our stated goals. That was a war. As horrible and destructive as war is, once in it, the U.S. set about figuring out how to win.
I hope that clarification allows me to return to my point. The Afghani people that put their trust in us are going to die for it.