We arrive at the following paradox in a globalized world: when nationalists pursue more formal sovereignty they achieve less real sovereignty of the people. They want to take back control and they end up with less control. That’s what Great Britain will end up with. That’s also what the Catalan nationalists will achieve if they pursue their nationalistic dreams.
This paradox has a corollary: when countries in Europe renounce formal sovereignty this leads to more real sovereignty of the peoples of Europe.