A newspaper operating in part of Spain (6)
I believe the answer is:
aragon
'part of spain' is the definition.
(I've seen this before)
'a newspaper operating' is the wordplay.
'newspaper' becomes 'rag' (rag is a kind of newspaper).
'operating' becomes 'on' (I've seen this in other clues).
'a'+'rag'+'on'='ARAGON'
'in' acts as a link.
(Other definitions for aragon that I've seen before include "Old Spanish kingdom" , "French linesman" , "Whence Catherine" , "Former Kingdom in Spain" , "(7 of) Henry's first" .)