As recently as a month ago, it appeared that a second bail-out of Greece would be a relatively straightforward affair. As with previous rescues cobbled together by the European Union and its lending partner, the International Monetary Fund, staff economists would estimate Athens’ financing hole over the next three years (about €115bn), agree a reform programme with the government and start writing cheques.

Greece’s debt burden – expected to hit 172 per cent of gross domestic product next year – is, for example, so large that it may never get paid. Officials cannot acknowledge this, however, for fear of spooking bondholders into believing default is at hand. Similarly, private investors face political pressure to bear the burden of a new bail-out – but among the largest investors in Greek bonds are Greek banks, which would take huge losses (and need more international aid) if their holdings were cut in value.

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