After 20 years and more than $2 trillion, the US is under growing pressure finally to withdraw from Afghanistan, leaving the country where it started: in the hands of the Taliban. What will this mean for Afghanistan’s people, their neighbors, and the world? Ashley Jackson is the co-director of the Centre for the Study of Armed Groups at the Overseas Development Institute. She is the author of the forthcoming book Negotiating Survival: Civilian-Insurgent Relations in Afghanistan.