A decade after the Brexit vote, an NBER study finds the UK economy is 6-8% smaller than if it had stayed. Seven prime ministers, a weakened pound, and a demographic cliff.

U.K. voters chose to leave the European Union in a referendum that 10 years on still forges political identities

A decade has passed since the United Kingdom voted to leave the European Union, a decision that continues to define political loyalties and the end of deep ties within the region.…