There's an even better test. On the TV show 'Pointless': If there was a question that asked for the name of a country containing three or more vowels, would "The European Union" be a valid answer?Raab should inform the EU that as and when it is admitted to the UN as a single sovereign nation - and no longer just a legal personality - with all that implies, then the position will change to follow the Treaty of Vienna protocols.
Until then, wind your neck in.