's Foreign Minister hassummoned the United States
' ambassador to Germany
, John B.Emerson, to discuss information obtained by Berlin
that the USmay have monitored Angela Merkel
's mobile phone, a governmentspokesman said on Thursday.
The move comes a day after Merkel called President BarackObama to demand immediate clarification and told him if suchsurveillance had taken place it amounted to a "grave breach oftrust."