Written in an article by The Independent 'Northern Ireland ‘can rejoin EU after Brexit if it votes for reunification'. A statement from the Brexit Secretary on an Ireland reunification says:

“If a majority of the people of Northern Ireland were ever to vote to become part of a united Ireland the UK Government will honour its commitment to enable that to happen.”

“In that event, Northern Ireland would be in a position of becoming part of an existing EU member state, rather than seeking to join the EU as a new independent state.”

Have there been any other occurrences of (re)unification for membership of the European Union or its predecessor other than that of the 1990 unification of East and West Germany to join the EEC, or any serious political discussion within a member state about doing so?

  • The only other case I know of would be Cyprus and AFAIK there the official position of the EU is that the whole island is already a member of the EU. Reunifications are rare. :-) – Reinstate Monica - M. Schröder Mar 29 '17 at 11:30
  • @MartinSchröder I thought as much, but haven't heard of the Cyprus and AFAIK situation before. I'll look into that. – Bradley Wilson Mar 29 '17 at 11:46
  • Mayotte was French all along but became part of the EU in 2014. Greenland left in 1985 and Saint-Barthélemy left in 2012 (both are now considered “overseas countries and territories”). And as you note, Germany added a big chunk of territory and population in 1990. So territorial reconfigurations are possible. – Relaxed Apr 24 '17 at 20:28
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    @BradleyWilson I think that "AFAIK" is "as far as I know", rather than a country, or a Cypriot group. As far as I know... – owjburnham Jun 24 '17 at 11:59
  • Ah gotcha, never heard of that acronym before. – Bradley Wilson Jun 24 '17 at 12:33

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