The world misses the old America, the one before the crash—the crashes—of the past dozen years.

That is the takeaway from conversations the past week in New York, where world leaders gathered for the annual U.N. General Assembly session. Our friends, and we have many, speak almost poignantly of the dynamism, excellence, exuberance and leadership of the nation they had, for so many years, judged themselves against, been inspired by, attempted to emulate, resented.

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