“But why was it necessary, or at least expedient, for the EU to force an economic collapse on Ireland to frighten Spain? The answer goes back to a fundamental, and potentially fatal, flaw in the design of the euro zone: the lack of any means of dealing with large, insolvent banks.

Back when the euro was being planned in the mid-1990s, it never occurred to anyone that cautious, stodgy banks like AIB and Bank of Ireland, run by faintly dim former rugby players, could ever borrow tens of billions overseas, and lose it all on dodgy property loans. Had the collapse been limited to Irish banks, some sort of rescue deal might have been cobbled together; but a suspicion lingers that many Spanish banks – which inflated a property bubble almost as exuberant as Ireland’s, but in the world’s ninth largest economy – are hiding losses as large as those that sank their Irish counterparts. …

Irish insolvency is now less a matter of economics than of arithmetic. If everything goes according to plan, as it always does, Ireland’s government debt will top €190 billion by 2014, with another €45 billion in Nama and €35 billion in bank recapitalisation, for a total of €270 billion, plus whatever losses the Irish Central Bank has made on its emergency lending. Subtracting off the likely value of the banks and Nama assets, Namawinelake (by far the best source on the Irish economy) reckons our final debt will be about €220 billion, and I think it will be closer to €250 billion, but these differences are immaterial: either way we are talking of a Government debt that is more than €120,000 per worker, or 60 per cent larger than GNP.

Economists have a rule of thumb that once its national debt exceeds its national income, a small economy is in danger of default (large economies, like Japan, can go considerably higher). Ireland is so far into the red zone that marginal changes in the bailout terms can make no difference: we are going to be in the Hudson.”

http://www.irishtimes.com/newspaper/opinion/2011/0507/1224296372123.html