Cornwall's paradise for the country (6)
I believe the answer is:
sweden
'the country' is the definition.
(Sweden is an example)
'cornwall's paradise' is the wordplay.
'cornwall' becomes 'SW' (Cornwall is in the South West of England).
'paradise' becomes 'eden' (synonyms).
'sw'+'eden'='SWEDEN'
'for' is the link.
(Other definitions for sweden that I've seen before include "Stockholm is the capital" , "European kingdom" , "ditto" , "We send out to the northern state" , "We send out to here, oddly" .)