When a diplomatic deal goes bad, the blame usually falls on the politicians. Often, we don’t even remember the names of the negotiators. But in the wake of the return of the Taliban, a lot of people have blamed one man: Zalmay Khalilzad, the U.S. special representative for Afghanistan reconciliation. Khalilzad was born in Afghanistan but had served in the U.S. government since the 1980s. He was at Bonn, and he later served as the U.S. ambassador to Afghanistan, Iraq, and the United Nations. Khalilzad sat down with reporter Andrew North to discuss what went wrong—and right—during the negotiations for peace in Afghanistan.