Strike in troubled times (5)
I believe the answer is:
smite
'strike' is the definition.
(I know this)
'troubled times' is the wordplay.
'troubled' is an anagram indicator.
'times' with letters rearranged gives 'SMITE'.
'in' acts as a link.
(Other definitions for smite that I've seen before include "Strike with a firm blow" , "Strike firmly" , "Funeral pile" , "Whack" , "Hit hard in olden times" .)