The Euro: How a Common Currency Threatens the Future of Europe

Can Europe prosper without the euro?

In 2010, the 2008 global financial crisis morphed into the “eurocrisis.” It has not abated. The 19 countries of Europe that share the euro currency—the eurozone—have been rocked by economic stagnation and debt crises. Some countries have been in depression for years while the governing powers of the eurozone have careened from emergency to emergency, most notably in Greece.

In The Euro, Nobel Prize–winning economist and best-selling author Joseph E. Stigli...