Are The EU PIIGS About To Start Squealing?

As the migrant crisis in Europe worsens serious steps to address it are being considered.

One proposal is for passports to be required in order to cross from one EU country to another.

Would such a drastic move spell the beginning of the end for the Eurozone as a viable entity?

And if so what will happen to the piles of sovereign debt that's been issued by the economically vulnerable EU PIIGS, and to the investors who have been pouring money into them at what appear to be ridiculously low yields?

Read the story and check out the historical yield chart at the article 'EU PIIGS: Are These 10-Year Sovereign Bond Yields Either Warranted Or Sustainable?' here.