Refusal to change one's views (13)
I believe the answer is:
intransigence
'refusal to change one's views' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for intransigence that I've seen before include "Refusal to budge" , "Obstinacy" , "Refusal to change one's views" , "Refusal to compromise or discuss" , "Stubborn refusal to compromise" .)