Yes. Maybe not just oil rich though. Afghanistan is rich in minerals, but in this case the plan failed. Whilst the US was spending money and good lives fighting in Afghanistan, the Chinese stepped in and got all the mining contracts. If the US pulled out now, it would display to the world what the US was really after. Now they have to stay a while and lose more lives, just so they wont look bad. In Iraq the US all but got full control of the oil. I don't see the US invading Somalia, they have no oil or minerals to speak of, nor does the Yemen.