In the new edition of his standard work, the founder of one of the most successful lobbying companies in the European Union (EU), Prof. Klemens Joos, bundles experience acquired over more than three decades to form a scientific theory on governmental relations. It focusses on the insight that, in view of the increasingly complex decision-making structures of the EU, the most precise possible knowledge of decision-makers and decision-making processes is at least equally as important to success as the content aspects of interest representation. In a new chapter, the author sets out the formula for science-based interest representation developed by him from his practical experience. With the Treaty of Lisbon, which entered into force on 1 December 2009, the EU de facto became a state territory stretching from Portugal to Finland and from Ireland to Cyprus. The European Parliament became an equal-status decision-maker alongside the Council of the European Union (Council). The previous co-d
