Those pressing for a yes vote in next year's referendum on Scottish independence need to convince voters that the country will prosper under a new currency and macro-economic regime. This will prove difficult, not because the current system is perfect but because all options have drawbacks.
Alex Salmond's policy of keeping sterling as the currency for an independent Scotland has come under renewed attack after a poll carried out by his opponents found only 17% of Scots supported it.
Last week's curious visit to Edinburgh by the Québec separatist leader and premier Pauline Marois has provoked discussion about the subtleties of Scottish nationalism, which has led to one conclusion: all independence movements are not necessarily the same.
The unfolding controversy over a future independent Scotland's status within Europe has reached a crisis point for the Scottish government: in the dispute with commission president José Manuel Barroso, the credibility of a significant chunk of its case is at stake.
The Scottish deputy first minister has accepted opposition demands for an emergency statement to the Holyrood parliament after José Manuel Barroso indicated that an independent Scotland would have no automatic right to inherit any of the UK's EU opt-outs.
The Scottish government is pressing for urgent talks with the European commission after José Manual Barroso said it was obvious that an independent Scotland would have to reapply to join the EU.
The Labour party will warn on Wednesday that it can offer no guarantees that it will be able to reverse any of the coalition's defence cuts in light of Britain's tight public finances.
The president of the European council has intervened in the Scottish independence debate, claiming that nothing will be gained from breaking up the UK. Herman Van Rompuy, who would chair meetings to discuss if an independent Scotland could join the EU, said the move for separatism was a thing of the past.
The UK government says an independent Scotland would have to apply as a new member state to join the European Union, with uncertain consequences.
Alex Salmond has launched a damage limitation exercise to contain the political crisis over allegations that he lied about an independent Scotland's automatic entry into the EU.