<sod >BERLIN - Chancellor Angela Merkel is to appear Thursday before a parliamentary committee looking into alleged U.S. surveillance in Germany and the activities of Germany's own foreign intelligence service.< eod>< sod > BERLIN - Chancellor Angela Merkel testified Thursday to a parliamentary committee examining alleged U.S. surveillance in Germany and the activities of German intelligence, defending her insistence that "spying among friends" is unacceptable.< eod>