The GDP of *27* countries combined is now greater than that of the US? And that tells you that the advantage the US enjoys of having the biggest economy in the world is eroding? Other than being able to add up their respective GDPs, what do these 27 countries have in common policy- or capability-wise?
The US, especially these days, moves with the flapping of a single mouth: that of George. How does the "EU-plus-two" speak or act? You can't get 3-out-of-4 EU countries to agree on whether to have doughnuts or croissants for breakfast, how do you propose they provide some kind of a backstop to US hegemony?
Similarly for your "East Asia" number: I presume this includes India, China, and Japan . . .
Fooey!
/jordan