The Nation That Fell To Earth

It’s the year 2031–one generation removed from Sept. 11, 2001–and Americans are commemorating the 30th anniversary of the terrorist attacks on New York City and Washington. How well did America respond to that day, when viewed with the benefit of hindsight? How has history judged our leaders’ actions?
Here, a [hypothetical] historian looks back on that distant event and explains how 9/11 would change America, and the world, in ways that few could have imagined.

Niall Ferguson imagines the future in this Foreign Policy piece.