So we spend over $600 billion/year and can't get the job done in Afghanistan, who don't have any planes, tanks, or heavy artillery... How do you explain that?
You don't know much about counter-insurgency warfare, do you?
Those planes we have often fly too high and too fast. The roads and villages cannot handle the tanks. How do you use artillery without taking a chance on collateral damage.
The best thing to take out a Taliban fighter with an AK-47 is a American soldier, sailor or Marine with an M-4/M-16, face-to face.
I have helped train them do that for years.