Turmoil now convulses political systems throughout the West. While Donald Trump, Brexit, and various populist movements across Europe are different phenomena with distinct lineages, the current insurgencies against the status quo often stress loyalty to place and call for national self-determination. It would be a mistake to discount the many genuine benefits of the post-1989 trend toward “globalization” (such as the accompanying decline in poverty in many developing countries). The current form of globalization may, however, have reached a point of diminishing returns: Economic growth has slowed in many industrialized nations, the weakening of national borders has increased the threat

…