Struggle to get news on a capital (6)
I believe the answer is:
vienna
'capital' is the definition.
(capital of Austria)
'struggle to get news on a' is the wordplay.
'struggle' becomes 'vie' (to vie is to struggle or contend with).
'to get' means one lot of letters go next to another.
'news' becomes 'nn' (an abbreviation for new written twice).
'on' says to put letters next to each other.
'vie'+'nn'+'a'='VIENNA'
(Other definitions for vienna that I've seen before include "Capital on the Danube Canal" , "On the Danube, it was home to many great composers" , "European city for New Year's Day concert" , "European capital" , "Austrian city of the waltz" .)