Until about twenty years ago, the consensus view on the cause of financial-system distress was fairly simple: a run on one bank could easily turn to a panic involving runs on all banks, destroying some and disrupting the financial system. Since then, however, a series of events—such as...

The great financial crisis and the euro area crisis led to a substantial reform of financial safety nets across Europe and - critically - to the introduction of supranational elements. Specifically, a supranational supervisor was established for the euro area, with discrete arrangements for...