Winning in Afghanistan

We can't win in Afghanistan by fighting over and trying to control the land. In a desert society it is the water that is most important. He who controls the water in the desert controls everything else. So we must fight for the water not the land. If we stop the water from getting to the enemy the the enemy will surrender. Second, we must stop the bullets. Stop the supply of ammunition. Find out where they are making it and destroy the factory. Next, stop the money. Find out who is financing the army and stop the flow of money to them. Lastly, find out why they are fighting or who they are fighting for and negotiate with them if possible. Give them half of what they want. That should do it. I think this is the way to fight a modern war. Ground fighting is too expensive and too many people get killed.