Sub-State entities like Wales or Scotland in the UK; Wallonia and Flanders in Belgium; Bavaria and the other German Lander; the Austrian Lander; or the Basque Country, Catalonia, Galizia and some others in Spain, do have, among many others in the whole of Europe, a key role therefore and are facing with difficult legal and institutional challenges before the EU, due to their current difficulties to actively participate within all EU levels whatsoever. The problems in reaching a peaceful institutional agreement on all the aforementioned are even greater when we talk about the EU as the fruit...