Politics of the European Union

The political structure of the European Union (EU) is similar to a confederation, where many policy areas are federalised into common institutions capable of making law; the competences to control foreign policy, defence policy, or the majority of direct taxation policies are mostly reserved for the twenty-seven state governments (the Union does limit the level of variation allowed for VAT). These areas are primarily under the control of the EU's member states although a certain amount of structured co-operation and coordination takes place in these areas.

Source: Wikipedia — Politics of the European Union (CC BY-SA 4.0)