Cryptic crossword No 3,425

Across

1. Protests over British conservative riding planes (7)
2. Confirm news about Iraq missing queen after being overthrown (5,2)
3. What may cause failure in a D&D game? (2,4)
4. Budget covered by annual lottery (5)
5. Set unfinished beer by ice-cream container after devouring gallons (7)
6. Evacuate from what used to be an island? (7)
7. Test remix with adjustments made for fanatic (9)
8. A Russian emperor spends time with drug smuggler, wanting money mainly (2,1,4)
9. Groom let his best man in venue (13)
10. Carol's one with those people (6)
11. Fleet chases stallion short of energy around a stable (9)
12. State "I do," suppressing exclamation of pleasure (5)
13. Trim singular strand of hair, or ten (7)

Down

1. Fire's ablaze, out burning Alberta (4)
2. Seriously? Change for ten yen is 50? (9)
3. Old-time train crew regularly works with steam? (6)
4. Stan Lee’s first person novel — a must-have (9)
5. Rest up, getting bored by introduction from wind instrument (4)
6. Ideal position to support ethical article (4,3,3)
7. Need coat taken apart for yarn (8)
8. Yes, Spanish brand includes uplifting boosts (6)
9. Set aside free cookies, occasionally filled with bit of vanilla (6)
10. Around urinal, shaving head of hair (6)
11. Water quality in laguna oddly lacking (4)
12. Quote from online source by the professor (4)
13. Dog show's entertaining these days (6)
14. Reception of a book series primarily examining North African revolution (8)
15. Give sincere lie, in a way (10)
16. Twitter's real upset over author missing gold? (6)