Hans-Werner Sinn is President emeritus at the ifo Institute for Economic Research and Professor emeritus at the University of Munich. He founded and directed the international CESifo research network and the Center for Economic Studies. He has received four honorary doctoral degrees, has delivered numerous distinguished academic lectures, has taught in a number of countries, and was both President of the International Institute of Public Finance (the world organization of Public Sector economists) and the German Economic Association (Verein für Socialpolitik). In recent years, his work has focused primarily on the euro, the financial crisis, the European Central Bank, green energy, demography, migration, and Brexit. He previously conducted extensive research into German reunification, taxation, systems competition, and insurance.