The World Cup unites billions of people every four years. But it also serves as a stage for debates over identity, nationalism, and political power.

In this episode of GZERO World with Ian Bremmer, Financial Times columnist Simon Kuper explores how the tournament became far more than a soccer competition. From debates over immigration and national identity to FIFA's immense power and lack of accountability, the World Cup has become a stage where politics and sport are impossible to separate.