Integration, functional differentiation and problem‐solving in multilevel governance

The European Union (EU) is currently facing unprecedented challenges to its problem‐solving capacity, such as those represented by pressing transnational crises and by bottom‐up criticisms towards the European integration process. Moreover, the EU is said to compensate its weak input legitimacy with an enhanced problem‐solving capacity. However, the notion of problem‐solving itself has remained remarkably vague in the multilevel governance (MLG)...