Catalan Leader Artur Mas Presents White Book On Independence Referendum

BARCELONA, SPAIN - SEPTEMBER 29: President of Catalonia Artur Mas speaks as he unveils the White Book on National Transition on September 29, 2014 in Barcelona, Spain. The White Book compiles 18 reports made by The Advisory Council for National Transition (CATN), a group of experts set up by the Catalan Government, analysing the advantages and downsides of an Independent Catalonia. The Spanish Government has presented an appeal at the Constitutional Court against the planned referendum on independence in Catalonia. (Photo by David Ramos/Getty Images)