The euro has had a difficult second decade but the project has still had some important successes. The common currency is popular among the euro area's citizens, intra-European exchange rate instability has been removed and the ECB has successfully achieved its primary goal of price stability....

The introduction of the euro meant that countries with sovereign debt problems could not use monetisation and devaluation as a way to prevent default. The institutional structures of the euro were also widely thought to prevent a country in difficulties being bailed out by other euro members or...