Negotiations over the U.S. debt ceiling are still one of the biggest risks facing the world, according to Davos delegates including Marissa Mayer, chief executive of Yahoo and Judith Rodin, president of the Rockefeller Foundation.
Mayer told a CNBC debate on the global agenda for 2014 at the World Economic Forum in Davos that she believes "the U.S. government is as partisan as it has ever been" in her lifetime.
"It's hard to see a long term solution," she added.
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