In low-intensity wars you have two choices: attempt to protect the civilians and take longer or go all crazy and kill everybody in sight and finish quickly.
Personally, I'm proud of the way our country has chosen to fight, even if it does take longer.
We should probably try more of the kill the enemy thing in Afghanistan or leave. 16 years of our military in Afghanistan is just ridiculous. My son went from a sophomore in high school to Army Captain in the time we have been involved in Afghanistan. At the rate we are going maybe we will win it in another 30 - 40 years or so. As far as NATO goes, their reason for existence went away 30 years ago. Europe’s biggest threat now is the one they are happily importing and we can’t protect them from that. I would be good with pulling out of both NATO and Afghanistan and letting them work their own issues out.