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The signatories of the call 
Jerzy Buzek (Poland)
Carlo Azeglio Ciampi (Italy)
Jean-Luc Dehaene (Belgium)
Jacques Delors (France)
Wim Kok (The Netherlands)
Péter Medgyessy (Hungary)
Paavo Tapio Lipponen (Finland)
Wolfgang Schüssel (Austria)
Mário Soares (Portugal)
Peter Sutherland (Ireland)
Guy Verhofstadt (Belgium)