A number of tools have been suggested for solving the European sovereign debt crisis, in particular the options of leveraging the EFSF/ESM, introducing Eurobonds and a European Troubled Asset Relief Programme (Euro-TARP). However, it is unclear how these instruments will work, given jittery...

A monetary union among autonomous countries cannot simultaneously maintain an independent monetary policy, national fiscal sovereignty and a no-bailout clause. These three features make up an impossible trinity, and attempts to preserve all three concurrently will ultimately end in failure. In...