German Constitutional Court decision of 30 June 2009 on the compatibility of the Lisbon Treaty with the German Constitution – Analysis of inconsistencies – Differences between the EU and a state – Sovereignty of the member states and Kompetenz-Kompetenz – Argument for a relative concept of sovereignty – Sovereignty and the right to withdraw – Critical analysis of BVerfG's assessment of the EU's democratic deficit and denial of the importance of the European Parliament