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Federal Councillor Rudolf Merz, German Chancellor, Angela Merkel, , Swiss Federal President Pascal Couchepin, Federal Councillor Moritz Leuenberger and Swiss Federal Councillor Micheline Calmy-Rey, form left to right, pose for the photographers during Angela Merkels first official visit to Switzerland, in Bern, Tuesday, April 29, 2008. Several topics are expected to be discussed such as Switzerlands tax policy and the argument about the aircraft noise of planes flying over Southern Germany to get to Zurichs airport. (KEYSTONE/Lukas Lehmann) Bundeskanzlerin Angela Merkel, 2. von links , wird von den Bundesraeten Hans-Rudolf Merz, links, Bundespraesident Pascal Couchepin, Mitte, Bundesrat Moritz Leuenberger, 2. von rechts, und Bundesraetin Micheline Calmy-Rey, rechts, am Dienstag, 29. April 2008 in Bern zu einem Arbeitsgespraech empfangen. (KEYSTONE/ Lukas Lehmann)