The negotiations that led to the United Kingdom’s withdrawal from the European Union lasted more than four years. During that grueling process, three different prime ministers came and went in Britain, shifting positions and occasionally roiling the talks. The one constant was Michel Barnier, the European Commissioner in charge of Brexit talks.  This week on our podcast The Negotiators, Barnier tells host Jenn Williams about challenges he faced in the talks, including one that couples often confront in divorce proceedings: how to dismantle the partnership and still retain a measure of goodwill. Barnier has published a diary he kept during Brexit. For his full story, we recommend reading My Secret Brexit Diary: A Glorious Illusion. The Negotiators is a partnership between Doha Debates and Foreign Policy. Learn more about your ad choices. Visit megaphone.fm/adchoices