Germany is indisputably the most powerful nation in Europe, but does it have the will and the means to prevent the EU being undermined by division and fragmentation? The migration crisis and the Greek debt disaster have posed challenges that Angela Merkel has struggled to overcome. Stephen Sackur speaks to Norbert Rottgen, senior figure in the Christian Democratic party and chairman of the foreign affairs committee in the German parliament. Can German leadership rescue the European project? Show less