ACROSS
 1. <leave in> STAYCATION = →"K STATION"←
 6. <pole> MAST = MA + ST
 8. I DIM outside 0 = IDIOM <artistic style>
 9. <concerning smell> OLFACTORY = O_L FACTORY
11. (HELD PERSIA)* = LEADERSHIP <skill in governance>
13. A_ S_ I_ A_ = ASIA <land>
14. VILE D outside I_ = VEILED <hidden>
16. ←AID← BETS outside E = DIABETES <medical condition>
19. <currency> RENMINBI = RE N + B inside MINI
22. <dress formally> TOG OUT = TOGO U_T
24. <monarch> KING = KIN + G_
25. DREADER after MIN = MIND READER <telepath>
27. <versemonger> POETASTER = OPERETTAS*
29. <states> AVERS = AVERSE - E_
30. <Swiss city> BERN = "BURN"
31. _I_ NEXT MISER* = IN EXTREMIS <when desperate>

DOWN
 1. SLIP* + LOVER = SPILLOVER <consequence>
 2. A GI (NATO IT)* = AGITATION <rabble-rousing>
 3. COME outside PER = COMPERE <host>
 4. <what e.g. cobbler applies> TOOLS = TOO + L_S_
 5. <cancelled> OFF = OF outside F
 6. <fuel> METHANE = M_E + THANE
 7. SAR_ DINE = SARDINE <fish>
10. AS P HALT = ASPHALT <pitch>
12. <emperor> HADRIAN = HAD RAN outside I
15. <hardworking people> DYNAMOS = MONDAYS*
17. _OND_ HE inside TRIM = TRONDHEIM <city in Norway>
18. <takes off> SATIRISES = S AT_ IRISES
20. <example> EPITOME = I inside EP TOME
21. <heavy weight> MEGATON = ←NOT A GEM←
23. O PE + RAIN* = OPEN-AIR <outside>
26. R inside DUE X = DUREX <condom manufacter>
28. ←NIT← = TIN <container>