In the concluding part of a series on the political economy of Brexit, the Alex Salmond Show turns to two leading international economists to debate world trends. Michael O’Sullivan, author of “The Levelling: What’s Next After Globalization,” looks to the new economic realities confronting countries large and small, while Professor Carles Boix explains why many small countries have been better able to adapt to the social pressures of the global economy than their larger neighbours.