Puzzle of Castro and CIA almost resolved (8)
I believe the answer is:
acrostic
'puzzle' is the definition.
(I've seen this before)
'castro and cia almost resolved' is the wordplay.
'and' says to put letters next to each other.
'almost' means to remove the last letter (most of the word but not all of it).
'resolved' indicates an anagram.
'cia' with its final letter taken off is 'ci'.
'castro'+'ci'='castroci'
'castroci' anagrammed gives 'ACROSTIC'.
'of' is the link.
(Other definitions for acrostic that I've seen before include "Type of word puzzle" , "Legal document" , "RAC stoic (anag) - lines of writing where certain initial letters form a word or proverb" , "Socratic kind of old word puzzle" , "Socratic sort of word puzzle" .)