Superpower from Russia viewed evenly (3)

I believe the answer is:

usa

I'm a little stuck... Click here to teach me more about this clue!

'superpower' is the definition.
(I know that U.S.A. is a superpower)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for usa that I've seen before include "11 Nation" , "America" , "Briefly, a great federation" , "Initially, a great federation" , "country" .)

I've seen this clue in The Times.

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