Variety published conclusion to damning exposé on the front (5)
I believe the answer is:
range
'variety' is the definition.
(range can mean a wide variety)
'published conclusion to damning expose on the front' is the wordplay.
'published' becomes 'ran' (as in a newspaper running a story).
'conclusion to' says to take the final letters.
'on the front' says to take the initial letters.
The last letter of 'damning' is 'g'.
The initial letter of 'expose' is 'e'.
'ran'+'g'+'e'='RANGE'
(Other definitions for range that I've seen before include "Scope, extent" , "Set < compass" , "Mountain stretch" , "Limit of effectiveness" , "Cooking stove or place for target practice" .)