After the publication of 'Political Innovation' book, here is DEIA newspaper interview in Spanish regarding constitutional change, the right to decide and the inflexibility of the Spanish nation-states. Here is the link to the article: http://www.deia.com/2015/11/28/politica/euskadi/vascos-y-catalanes-no-encontramos-acomodo-en-un-estado-inflexible?utm_source=dlvr.it&utm_medium=twitter