POPULISM is the weapon not just of the downtrodden. As the crisis in Catalonia demonstrates, the rich have economic anxieties of their own. Catalonia has an identity distinct, in important ways, from that of the rest of Spain. But the recent drive for independence has been energised by anger over the flow of fiscal redistribution from rich Catalans to their countrymen: people seen, in parts of the restless north-east, as thankless and lazy as well as alien. Paradoxically, globalisation has inflamed separatism around the world by raising the question Catalans now confront: to whom, exactly, do we owe a sense of social responsibility?

Every country or restive region has its own idiosyncratic history. Yet over the long run national borders are surprisingly malleable. Some circumstances offer better prospects for the small and newly independent than others. The smaller the country, the more easily its government can satisfy its people’s political preferences. A broadly satisfying compromise...Continue reading