Asian returned intelligence on terrorists (5)
I believe the answer is:
iraqi
'asian' is the definition.
(Iraqi is an example)
'returned intelligence on terrorists' is the wordplay.
'returned' is a reversal indicator.
'intelligence' becomes 'iq'.
'on' says to put letters next to each other.
'terrorists' becomes 'ira' (I've seen this before).
'iq' backwards is 'qi'.
'qi' put after 'ira' is 'IRAQI'.
(Other definitions for iraqi that I've seen before include "From a battle zone" , "Foreign citizen" , "Language" , "Native of Baghdad, say" , "Probably a Muslim" .)