Berlin to meet U.S. ambassador over spying reports: source

German Chancellor Angela Merkel's chief of staff will meet the U.S. ambassador on Thursday to discuss allegations that U.S. spies bugged senior government ministers, a German government source said. In the latest twist in an ongoing scandal over extensive U.S. spying in Europe which has caused outrage in Germany, media reported that the U.S. National Security Agency (NSA) had bugged the economy and finance ministers. "The Chancellor's Chief of Staff has invited U.S. Ambassador Joh