Martin Wolf’s column on Wednesday and his subsequent blogpost have once again focused attention on the importance of trade flows in the eurozone. Martin’s argument is that the German strategy of fiscal austerity and internal reform to fix the imbalances needs to change. I would like to ask a different question, which is what happens in the likely event that it does not change?

Investors, ever more optimistic that the worst of the euro crisis is over, are asking whether the German strategy might actually work. Largely unnoticed by some, eurozone trade imbalances have in fact improved dramatically in recent years. But this has happened mainly for the wrong reasons, ie recession in the south rather than any large narrowing in the competitiveness gap. The eurozone is engaged in a race between the gradual pace of internal devaluation and the mercurial nature of democratic politics. It is still not obvious how this race will end.

When the euro was launched in 1999, its supporters believed that the balance of payments crises which had plagued its weaker members for decades would become a relic of the past. The crisis revealed this view to be entirely complacent. The current account imbalances which were generated by the peripheral economies during the boom of the 2000s soon became impossible to finance after the crash. It was only the growth of so-called “Target2″ imbalances on the ECB’s balance sheet which provided the official financing which held the system together. No Target2, no euro.

However, some of the contingent credits which the Bundesbank has acquired against the rest of the ECB in the course of this process might become worthless under certain break-up scenarios, and this has become a political hot potato inside Germany. The solution, many in Germany believe, is to foster an improvement in the balance of payments positions of the troubled economies so that no further rise in the Target2 imbalances will be needed. Read more