In a survey launched this month, the Pew Research Centre finds that most Americans now believe that the US plays a "less important and powerful role" in the world than it did 10 years ago.
The result is hardly a surprise. It doubtless reflects widespread perceptions of foreign policy miscalculation, as well as ongoing weakness in the US economy. Perhaps less well appreciated, however, is that a similar judgment could also be made in assessing the relative importance of the US in global science, technology and innovation.
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