Next month we mark 17 years since the US invasion of Afghanistan, certainly the longest single military effort in US history.

Our original goal was to destroy Al-Qaeda and oust the Taliban that were protecting them. Since that time, a great deal has happened, and mostly the law of unintended consequences has been the victor. Security and political stability still seem elusive. US government understanding of the country and the region still seems sketchy at best, and corruption still seems rampant. And even with all of that, some think real peace is still possible. Where we are today and what’s really happening on the ground, and what the US can do, even if it had the will and competence to do it, are subjects that I talk about with RAND senior foreign policy expert Laurel Miller.