Having opposed continued membership in the 1975 referendum, the party has supported membership of the European Union since the adoption of the Independence in Europe policy during the 1980s. Consequentially, the SNP supported remaining within the EU during the 2016 referendum where every Scottish council area backed this position. Consequently, the party opposed Brexit and sought a further referendum on the withdrawal agreement, ultimately unsuccessfully. The SNP would like to see an independent Scotland as a member of the European Union and NATO and has left open the prospect of an independent Scotland joining the euro.