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' suggests the final letters.
'on the front' suggests taking the first letters.
The final letter of 'damning' is 'g'.
The first 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" .)