The United Kingdom holds one of the world’s financial capitals; its decision to leave the European Union caused an earthquake in the markets. Even as markets stabilize, the political and economic uncertainty in Britain continues. James Surowiecki, who writes The New Yorker’s Financial Page column, spoke with Sony Kapoor, a British macroeconomist and the managing director of the think tank Re-Define, and a staunch opponent of Brexit. The British, Kapoor says, have been acting like the “spoiled brats” of Europe, complaining about a sweet deal full of special exemptions and then wanting more. “Whatever comes to us in terms of, let’s say, the E.U. playing hardball,” he says, “it’s entirely self-inflicted and very well deserved.” The complexities of extrication, he thinks, put the Leave camp in a position that is politically impossible, and that might be a good thing for the future of the E.U.