Falsify view of security service on country (8)
I believe the answer is:
misstate
'falsify' is the definition.
(thesaurus)
'view of security service on country' is the wordplay.
'view of security service' becomes 'mis' (I am not sure about this - if you are sure you should believe this answer much more).
'on' says to put letters next to each other.
'country' becomes 'state' (synonyms).
'mis'+'state'='MISSTATE'
Can you help me to learn more?
(Other definitions for misstate that I've seen before include "Put incorrectly" , "Wrongly announce" , "Inaccurately report" , "Mast site (anag.)" , "Give inaccurate info" .)