Quietly argue about foreign capital (6)

I believe the answer is:

prague

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'foreign capital' is the definition.
'Prague' can be an answer for 'capital' (capital of Czechia). I am not sure about the 'foreign' bit.

'quietly argue about' is the wordplay.
'quietly' becomes 'p' (p for piano and quiet).
'about' indicates anagramming the letters.
'argue' anagrammed gives 'rague'.
'p'+'rague'='PRAGUE'

Can you help me to learn more?

(Other definitions for prague that I've seen before include "Czech Republic's capital" , "Capital city of Czech Republic" , "European capital" , "Rather quiet" , "Gear up for this European city" .)

I've seen this clue in The Globe and Mail.

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