An independent Scotland would not have to join the EU. But most Scots want Scotland to be an EU member and it is a central plank of SNP policy. There is no precedent, however, for what happens if part of a member state becomes independent and wishes to remain part of the EU. (Greenland, Germany and Czechoslovakia are all relevant but different cases.) This is one reason why both sides have been vigorously engaging in claim and counter-claim over EU law.
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