Cryptic crossword No 4,021

Across

1. France needs mediators for public disorder (6)
2. Distort when there is a change of emphasis (8)
3. Lessons comprise final thoughts about growing crops (8)
4. Writer visiting a 4d environment perhaps (6)
5. President Carter was this surprisingly pure man after (6,6)
6. Minor Road requires amount of effort to reach mountain (4)
7. Eavesdropped on king being excused from cost (8)
8. Places wherein exotic olives are making a comeback (4)
9. Spooners on board hideaway for keeping records ? (8)
10. Was rail query wrongly put to one side ? (8,4)
11. Seed that essentially promises a medicinal benefit (6)
12. Interrupt review (4,4)
13. Despot exposed by National and State advocacy (8)
14. Vehicle stolen twice apparently (3,3)

Down

1. Quickly nicked when supporters turned back and ran away (8)
2. Lumberjack intially holds large jug (5)
3. Authenticity of wine growing region captivates one (10)
4. Takes back concerning playground game announcement (10)
5. Sacred wine possibly contained large flower (9)
6. People who 20ac or shared unexpectedly (8)
7. Dim view of fool admitting little interest initially. (6)
8. Unfortunately seems all luck out with this kind of pain (15)
9. Get the benefit of actor initially being employed in a series of plays. (4)
10. False injury claim on the phone leads to celebratory drink. (9)
11. Part of Pennsylvania is tree-covered (6)
12. Heard violinist plays with this for boyfriend (4)
13. When principally insects metamorphose and get old (5)