As British Prime Minister Theresa May starts the clock on Britain’s departure from the European Union, there’s no real question that the divorce is going to hurt both parties — and Britain, to be sure, much more than the EU. But this isn’t to say there’s no upside. The right kind of deal will recognize these opportunities and try to make the most of them. This whole misadventure began with historic errors of judgment — former Prime Minister David Cameron’s decision to call a referendum on U.K. membership, and Europe’s decision to deny him significant concessions in the talks that […]