Prof Charles Wyplosz of Graduate Institute Geneva in this voxeu piece:
Governments should be very careful not to undermine the resumption of growth as they feel the urge to wind down the deficits that they opened up during the crisis. The now-classic example is the euro area’s double dip after the Great Recession. Suspending the budget constraint, even for good reason, creates a moral hazard. The response is not premature austerity, nor is it ever lasting laxity. Finding the right balance will be challenging.
The euro area faces a number of specific challenges. We hear many calls for coordination. There is no doubt that some coordination would help, but not in every dimension. Targeted fiscal measures, which imply transfers to erase the bottlenecks, are ill-suited for coordination. Most measures must target well-identified bottlenecks. In the absence of a fiscal union, providing support to firms and households is a national competence for the obvious reason that it is financed by national taxpayers. In addition, these targets are probably better understood and more effectively dealt with at the local level. However, there is a risk that some governments cannot borrow what they need because they are already overindebted. Given the amounts likely to be required, the risk of another debt crisis is serious because, as we now know, the euro is a foreign currency because member countries do not own their central bank, the ECB. This is where coordination is required.
One solution would be a mutual guarantee for new national borrowings. An alternative is that the borrowing be undertaken collectively through jointly issued Eurobonds. This is a function that could be entrusted to the European Stability Mechanism (ESM), but its resources (3.5% of GDP) are too limited, the conditions too drastic and the decision-making process, which requires unanimity, too inefficient.
Unfortunately, both mutual guarantees and Eurobonds have been rejected repeatedly in the recent past because of moral hazard considerations. Indeed, countries that managed to attain low public indebtedness are unwilling to protect those that did not. Under the current exceptional circumstances, it would make sense to set the moral hazard concern aside but, given the urgency of the situation, it seems unlikely that an agreement can be worked out after so many years of heated discussions.