The European Union last week destroyed the illusion that the eurozone and the UK could happily coexist inside the EU. That may have made it a historic summit. But the decision to set up a fiscal union outside the European treaties will do nothing whatsoever to resolve the eurozone crisis.
There are different notions of a fiscal union – some more integrated, some less so, some obsessed with fiscal discipline, others with a joint bond. But whichever your preference, this is not something you would wish to do outside European treaties. The existing treaties form the legal basis for all policy co-ordination of monetary union. It gets very messy when you try to circumvent them.
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