Global currency is not a new idea, but it may soon get a new lease of life(1998) (economist.com)

These old articles are good read because shows how thinking advances. Warnings about euroarea turned out to be true.

Today the idea of optimal currency area is more known.

* https://www.economist.com/blogs/freeexchange/2013/08/sustain...

* https://www.economist.com/blogs/freeexchange/2010/05/optimal...