Cryptic crossword No 3,891

Across

1. Take it easy with sudden move involving love (6)
2. A bit of water in drain cycling, runs over patio initially (8)
3. Permits senile, inane comic in performance (8)
4. Independent leader for one, backing current board regularly (6)
5. Full of initiative, begin quietly leading revolt (12)
6. Checked out animal surgeon saving heart of the dog basically (6)
7. Government with greeting for Indian leader (6)
8. Sleight of hand moving mountain --- a lesson in pseudoscience primarily (12)
9. Concert venues, say, are occasionally near the fringe of suburbia (6)
10. Reacting to pollen, possibly, lilac garden at intervals redesigned (8)
11. Popular show with four episodes fundamentally having no effect (8)
12. Person being examined in collegiate steeplechase (6)

Down

1. China article announced support over prize (6)
2. Heather following more extreme, outspoken mercenary (8)
3. Border, for example, around Geneva, after the start of darkness (6)
4. Adjusted engineering routine without university education (8)
5. Unrefined nation led by king, tyrant ultimately in charge (6)
6. Sample from Bonobo entranced music producer (4)
7. Formulate first half of thesis with focus of explosive growth in recording (8)
8. Appalling case of savagery and unexpected movement concerning the Ottomans perhaps (8)
9. Crashing tsunami resulting at first in community nudity (8)
10. Upper-class paid a ton, boosted by energy to modernize (6)
11. European city champ probed by Italy (6)
12. Lots of love and sex appeal accompanying a seductive young woman (6)
13. Health food from Belgium went swiftly (4)
14. Natural, at this point, inhabiting pub with pint at closing (8)