If you go to the above link you can see what The International Spiegel, a German magazine, published on July 08, 2015 the following:
America’s Greece: Fixing Puerto Rico Could Provide Answers for Europe
Barry Eichengreen (born in 1952) is a professor of economics and political science at the University of California, Berkeley.
This is what the professor says in the introduction to his essay:
The Greek crisis could have been stopped years ago if European politicians hadn’t been so stubborn. They should have followed the example set by the United States in dealing with Puerto Rico’s problems.
Here is a link to an article about the despair and agner in Puerto Rico: