German Chancellor Angela Merkel and Vice Chancellor and Foreign Minister Guido Westerwelle (L) congratulate newly elected German President Christian Wulff after his swearing-in ceremony in the Bundestag, German lower house of parliament, at the Reichstag in Berlin July 2, 2010. Former conservative Christian Democratic Union party (CDU) Lower Saxony premier Christian Wulff becomes Germany's 10th post-war president, replacing Horst Koehler, in office since 2004, who unexpectedly resigned on May 31. REUTERS/Thomas Peter (GERMANY - Tags: POLITICS)