Roland Koch, outgoing Premier of Germany's federal state of Hesse, and his wife Anke welcome former German Minister Rudolf Scharping (R) during a reception to honour Koch, at the Biebrich castle in Wiesbaden August 30, 2010. Former Hesse state premier Roland Koch, a powerful leader in Chancellor Angela Merkel's CDU, quit politics in a move that could further erode support for the conservatives. REUTERS/Kai Pfaffenbach (GERMANY - Tags: POLITICS)