European city to repay, backing shifting a European position? (6)

I believe the answer is:

geneva

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'european city' is the definition.
(I've seen this before)

I don't understand how the rest of the clue works.

(Other definitions for geneva that I've seen before include "(famous for its Red Cross)" , "Convention site" , "Swiss city/lake" , "Avenge in Swiss city" , "Swiss city and canton" .)

I've seen this clue in The Guardian.

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