As the "unipolar moment" stretches out into an era, its opportunities and vulnerabilities both come clearer a dozen years after its conceptual coinage.
The idea of formally integrating the world's two largest economies-Japan and the United States-has been floated every two years or so, since the 1980s.
From the bikini to the doomsday clock, with the advent of nuclear weapons everything around us seemed to change. Contrarian political scientist John Mueller takes issue with this conventional view of the Atomic Age.