Writer narrow-minded describing Korea (10)
I believe the answer is:
peninsular
'writer narrow-minded describing korea' is the definition.
I can't judge whether this definition defines the answer.
'writer narrow' is the wordplay.
'writer' becomes 'pen' (something which writes).
'narrow' becomes 'insular' (I've seen this before).
'pen'+'insular'='PENINSULAR'
Can you help me to learn more?
(Other definitions for peninsular that I've seen before include "description of a war" , "Insure plan (anag)" .)