US global role at stake in this election

Martin Wolf: a Trump victory would shatter it, but defeat may only defer that tragic withdrawal. "This election is so important, because the US plays a unique role in the world. It has long been the paramount model of a functioning liberal democracy, leader of the countries that share these values and an essential player in resolving any big global challenge. The re-election of Mr Trump would signify a rejection of all three roles by the American people. No other country or group of countries is able to take its place. The world would be transformed — and not at all for the better." The Financial Times' Chief Economics Commentator reflects.