It seems pretty clear that the school of thought known as Modern Monetary Theory has made a big impact on Paul Krugman's thinking.
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Paul Krugman
As Cullen Roche at Pragmatic Capitalism points out, just a few months ago the spread between bonds issued by Japan and Italy, which have similar debt and demographic issues, was perplexing Krugman.
“A question (to which I don’t have the full answer): why are the interest rates on Italian and Japanese debt so different? As of right now, 10-year Japanese bonds are yielding 1.09%; 10-year Italian bonds 5.76%.
…I actually don’t have a firm view. But it seems to be an important puzzle to resolve.”
But today's column is basically right out of MMT.
"What has happened, it turns out, is that by going on the euro, Spain and Italy in effect reduced themselves to the status of Third World countries that have to borrow in someone else’s currency, with all the loss of flexibility that implies. In particular, since euro-area countries can’t print money even in an emergency, they’re subject to funding disruptions in a way that nations that kept their own currencies aren’t — and the result is what you see right now. America, which borrows in dollars, doesn’t have that problem."
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