Summit where clubs vote to accept overseas capital (6)
I believe the answer is:
climax
'summit' is the definition.
(thesaurus)
'clubs vote to accept overseas capital' is the wordplay.
'clubs' becomes 'c' (abbreviation in card games).
'vote' becomes 'x' (how votes are marked).
'to accept' is an insertion indicator.
'overseas capital' becomes 'lima' (capital of Peru. I am not sure about the 'overseas' bit.).
'c'+'x'='cx'
'cx' going around 'lima' is 'CLIMAX'.
'where' acts as a link.
Can you help me to learn more?
(Other definitions for climax that I've seen before include "Exciting conclusion" , "Culminating moment" , "(Reach the) highest level" , "Peak of a performance" , "Turning point or culmination" .)