David Morris - Since 1945 the number of nations has soared from about 60 to more than 180. The first wave of new sovereign states came with the decolonization movement of the 1960s and 1970s; the second in the early 1990s with the break-up of the Soviet Union. If Scotland votes for independence it may ignite a third wave. Dozens of would-be nations are waiting in the wings: Wales, Catalonia (Spain), Flanders (Belgium), Brittany (France), the list is long. In 1957 in his classic...