The GroundTruth Project's founder Charles Sennott on America's longest war.
The Qala-i-Jangi Fortress was the site of a legendary battle in 2001. The battle offered hard lessons about Afghanistan's history that the US still seems to have failed to learn.
Girls' education was outlawed under the Taliban, and the US invasion helped clear the way for female education. That's now under threat.
The US military has now been in Afghanistan for nearly 14 years. A new Special Report explores what has been lost and gained.