Copied from elsewhere.
Hats off to Iain Martin for putting “who sets the referendum question” front and centre, because it’s the most immediate issue.
The answer is simple: all constitutional matters are reserved, not devolved to Holyrood, far less any local authority.
Shetland only became part of Scotland in 1472, and just 141 years later Scotland began the process of Union, which concluded 104 years later. So Shetland was only part of Scotland for 141 years to the Union of the Crowns, or 245 to the Treaty of Union. It has been British far longer than it has been Scottish.
The great thing about the issue is the Pandora’s box it opens. Southern Scotland was one of the heaviest pro-Union regions in 2014, and unlikely to support any future separatist vote. The British Government could permit pro-Union regions the remain in the UK.
NO-voting regions in Southern Scotland in 2014 included: South Ayrshire, South Lanarkshire, Dumfries & Galloway, the Scottish Borders, East Lothian, Edinburgh...
iScotland could be a lot smaller than the Nats presume.