End of the road that is difficult for obstinate politician (7)
I believe the answer is:
diehard
'obstinate politician' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'end of the road that is difficult' is the wordplay.
'end of the' suggests the final letters.
'that is' becomes 'ie' (short for Latin 'id est', 'that is').
'difficult' becomes 'hard' (synonyms).
The final letter of 'road' is 'd'.
'd'+'ie'+'hard'='DIEHARD'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for diehard that I've seen before include "One to resist change" , "Backer of a losing cause" , "One strongly opposed to change" , "Person who resists change" , "Hire dad (anag) - one who sticks to traditional views" .)