In the framework of the LISBOAN Guest Lecture programme, Thomas Christiansen, Jean Monnet Professor of European Institutional Politics at the Faculty of Arts and Social Sciences at Maastricht University, visited the Institute for International Relations (IMO) in Zagreb. Hosted by Višnja Samardžija from the IMO, Prof. Christiansen delivered a LISBOAN guest lecture on “The Role of the National Parliaments in the EU” at the Croatian Parliament on the 16 April 2012. It was emphasized that the Lisbon Treaty empowered the National Parliaments of the EU member states within the EU governance because the Treaty granted them greater impact and possibility of oversight over the EU legislative process. The National Parliaments should now more horizontally cooperate among themselves in order to efficiently respond to the legislative proposals that are being drafted by the European Commission.