NO, IT'S NOT JOHNNY CASH'S:

The U.S., Spain and Greece are among developed nations whose borrowings put them in a “ring of fire” amid sovereign debt concerns, said Pacific Investment Management Co., which runs the world’s biggest bond fund.

The company is investing in emerging markets that will benefit from high savings rates, the absence of debt bubbles and a greater capacity for government spending, said John Wilson, head of the Australian unit of Newport Beach, California-based Pimco, in an e-mailed statement today. The fund manager is targeting bonds including those in Brazil, Mexico and Russia and retaining holdings of inflation-linked Australian debt, he said.

“While the support declared by European leaders and the International Monetary Fund quelled concerns of sovereign risk spreading, Greece’s ability to refinance near-term debt remains a risk,” said Wilson. “Other developed countries in this ‘ring of fire’ are Ireland, Spain, France, U.S., U.K., Italy, Portugal and Japan.”