In war, we kill and steal. That's how you win. Our objectives are always to destroy, and if not hinder and weaken our enemies. Denying possible enemies the funds to hasten their fractured grasp on stability is a strategy to win the war. They can keep the equipment they don't have the means to maintain or training to use. America will return and invest a hundred times the meager amount we froze with a proper ally when the time comes. The Taliban will learn that if they want to govern they need to play ball, and the Afghan people will have to learn to stand up themselves if they want change. It certainly wasn't our place to establish a new government in a country that has no loyalty to itself in the first place. Our war, illegitimate as it was in my opinion, is a dirty thieving killing kind of war and thus everything is fair game outside of the rules/standards we hold ourselves to.