Capital in Yugoslavia, then Serbia? (6)

I believe the answer is:

athens

'capital' is the definition.
(capital of Greece)

'in yugoslavia then serbia?' is the wordplay.
'in' indicates the answer is hidden within the clue.
'ATHENS' is hidden within 'yugoslavia then serbia'.

(Other definitions for athens that I've seen before include "Hasten to Greek city" , "city in Greece" , "EU capital" , "City of the Parthenon" , "Mediterranean capital" .)

I've seen this clue in The Irish Times.

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