It is not obvious, given the practical and economic advantages of currency union highlighted in the report, why that would be the case, if Scotland were willing to sign up to a Treasury-style set of constraints.

BBC: Scotland: Treasury wants a pound for a pound

The report also highlights the importance of a whole range of informal advantages and disadvantages.

BBC: Closing the opportunity gaps

The second report, by the navy, concluded that no other site could match the advantages of this island.

ECONOMIST: Weapons testing

Through our new GreenGov Supply Chain Partnership, Federal suppliers can agree to voluntarily measure, reduce, and report their greenhouse gas emissions to help GSA design an incentive-based approach to developing contracting advantages for companies that share our sustainability goals.

WHITEHOUSE: Greening the Supply Chain