Articles on poles in capital city (6)
I believe the answer is:
athens
'capital city' is the definition.
(capital of Greece)
'articles on poles' is the wordplay.
'articles' becomes 'a the' ('a' and 'the', indefinite and definite articles).
'on' says to put letters next to each other.
'poles' becomes 'ns' (North and South poles).
'athe'+'ns'='ATHENS'
'in' is the link.
(Other definitions for athens that I've seen before include "European capital city" , "Hen sat down in the city" , "Greek capital" , "foreign city" , "Hasten to European capital" .)