George Osborne has just announced half a billion pounds worth of investment in the UK's nuclear submarine facility on the River Clyde, which is seen as the start of many billions of pounds of UK investment both safeguarding and creating thousands of jobs in Scotland. This is a strong commitment to the Union.
It is quite possible that we are looking at a second independence referendum, perhaps triggered by SNP success in the Scottish parliament elections next year. If we have a second referendum then it will be that exercise that will determine the future of Scotland. The existing vote is that 55% of people in Scotland back the Union. If the people of Scotland back independence then it will of course happen.
Were independence to happen it would be a disaster, both for the people of Scotland and the whole UK. SNP offer fantasy economics, fantasy use of sterling, fantasy membership of the EU. The economic collapse of an independent Scotland run by SNP is guaranteed (though an independent Scotland with sensible government could remain viable, though this option doesn't seem to be on the table). I think the economic collapse would be so total that we may well be looking at civil war. I think we would certainly be looking at a process of Balkanisation. Just before the last referendum Shetland, Orkney and the Western Isles announced that they would subsequently hold their own referendums. I have little doubt that the same would happen after a second referendum, and that they would vote to break from Scotland and each negotiate a status modelled on that of the Isle of Man and Channel Islands. Shetland and Orkney have most of "Scotland's" oil. As Scotland collapsed there would be interest in other parts of Scotland for breaking away. The most obvious candidates are the rural areas just north of the border.
My personal view is that SNP will not request another referendum as they know they couldn't win. The difficulty they will have is selling this decision to their own supporters.