Draw evacuated terrorist gunmen into fighting (10)
I believe the answer is:
attraction
'draw' is the definition.
(synonyms)
'evacuated terrorist gunmen into fighting' is the wordplay.
'evacuated' suggests removing the centre.
'gunmen' becomes 'RA' (Royal Artillery).
'into' is an insertion indicator.
'fighting' becomes 'action' (I've seen this before).
'terrorist' with its middle removed is 'tt'.
'tt'+'ra'='ttra'
'ttra' inserted within 'action' is 'ATTRACTION'.
(Other definitions for attraction that I've seen before include "Interest" , "Magnetic force" , "Something that draws visitors" , "Charm" , "Drawing power" .)