David Beers
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David Beers: US finances 'unsustainable'

Wall Street stocks plunged as the New York stock exchange opened on Monday.

It follows a trend set earlier by Asian and European markets after the downgrading of America's credit rating and fears that Europe's debt crisis is worsening.

David Beers is managing director of Standard & Poor's sovereign ratings, he said there are "a lot of challenges" in the world markets.

  • 08 Aug 2011
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