Assured true agenda is different (10)
I believe the answer is:
guaranteed
'assured' is the definition.
(guaranteeing is a kind of assuring)
'true agenda is different' is the wordplay.
'is different' is an anagram indicator (letters placed in a different order).
'true'+'agenda'='trueagenda'
'trueagenda' with letters rearranged gives 'GUARANTEED'.
(Other definitions for guaranteed that I've seen before include "Covered against failure" , "Warranted" , "Promised" , "protected" , "swore" .)