Most Turkish Cypriot migrants left the island of Cyprus due to economic and political reasons in the 20th century, especially after the Cyprus crisis of 1963–64 and then the 1974 Cypriot coup d'état carried out by the Greek military junta which was followed by the reactionary Turkish invasion of the island. More recently, with the 2004 enlargement of the European Union, Turkish Cypriots have had the right to live and work across the European Union, including in Belgium, as EU citizens. In 2012, hundreds of Turkish Cypriots gathered in Brussels to draw attention to the EU's failure to keep the promises made to Northern Cyprus after having voted in favour of reunification during the 2004 Annan Plan referendum. The TRNC provides assistance to its Turkish Cypriot residents living in Belgium via the TRNC Brussels Representative Office located in Avenue Louise; in addition, the office promotes friendly relations between the TRNC and Belgium, as well as economic and cultural relations.