Chris VossChris Voss spent 24 years working for the FBI, culminating in him becoming the bureau's lead international hostage negotiator. In 2007 he left the organisation and, realising that the skills he had acquired were more widely applicable, began teachingnegotiation skills at Georgetown University's McDonough School of Business. He has also taught courses at Harvard Law School and is the head of the Black Swan Group, a consulting firm that leads businesses through difficult negotiations. Read More Read Less