Emerging?
They always have been a superpower,
If they were to challenge us militarily alone, We'd crush them.
What we need to be worried about is an alliance of Russia and China, And possibily other countries in the region, Seeing as America has burned alot of bridges over the years.
Economically?
They already are.
They would beat us if they had more advanced technology.
Right now, They have more special forces than we have military, alone?
If they had what we have, They would crush us.
Economically talking, They already crush us because the world relies on
them. Alot of jobs are over sea's, and hardly anything is made in the USA anymore.
Off Topic, Russia is an emerging power. They are using their influx in petrodollars to build up an army. Years from now they may be the second leading supplier in oil, And with the money they make from us and others relying on oil, they will dominate.

