Monument to headier times: The euro logo outside the European Central Bank in Frankfurt. The International Monetary Fund has warned of possible deflation in parts of Europe. Frank Rumpenhorst/AFP/Getty Images hide caption

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Frank Rumpenhorst/AFP/Getty Images

Britain Prime Minister David Cameron (left) and Netherlands Prime Minister Mark Rutte earlier today at the summit in Brussels. Eric Feferberg /AFP/Getty Images hide caption

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Eric Feferberg /AFP/Getty Images

Philip Reeves reporting for 'Morning Edition'

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After a day of shopping, residents of Geneva get on a bus to head home this past Saturday, carrying 250 euros' worth of groceries they bought at the Carrefour supermarket in Ferney-Voltaire, France. John Heilprin/AP hide caption

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John Heilprin/AP