On 9 December José Manuel Barroso told the BBC it was "obvious" that if one part of a member state became a separate country then it would have to apply for EU membership.
This indicates that Scotland would have to negotiate its terms of entry to the EU from scratch, contrary to claims made by Scotland's First Minister Alex Salmond.
And there is no guarantee that Scotland could retain the UK's opt-outs from the euro, the Schengen free movement agreement and Margaret Thatcher's rebate if they vote for independence in the 2014 referendum.
Billy Hill outlines the key points before BBC Scotland's Political Correspondent joins Alicia McCarthy to discuss what's next for the SNP and the pro-independence campaign.
Repealing ancient laws
How do we get rid of useless laws?
Parliament has never been a place to let go of old practices. You're more likely to hear Norman French in the chamber than an MP's first name.
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