Kata Kunci Pencarian:
- Komunitas otonom di Spanyol
- Konfederasi
- Federalisasi Uni Eropa
- Tanja Börzel
- Federalisation of the European Union
- Regional organization
- Langen, Hesse
- Otto Suhr Institute for Political Science
- Liberal intergovernmentalism
- Thomas Risse
- Confederation
- International order
- Benedetta Berti