Special report | The future of the dollar

The passing of the buck?

America's policies are putting at risk the dollar's role as the world's dominant international currency

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FORECASTING exchange rates is an inexact business. As Alan Greenspan, the chairman of America's Federal Reserve, once said, the activity “has a success rate no better than that of forecasting the outcome of a coin toss.” Recent years have borne this out: most currency forecasters would actually have done better if they had simply tossed a coin—at least they would have been half right. Yet over the next few years it seems an excellent bet that there will be a large drop in the dollar.