Men tortured in sinister country (7)
I believe the answer is:
denmark
'country' is the definition.
(Denmark is an example)
'men tortured in sinister' is the wordplay.
'tortured' is an anagram indicator.
'in' indicates putting letters inside.
'sinister' becomes 'dark' (I've seen this before).
'men' is an anagram of 'enm'.
'enm' going inside 'dark' is 'DENMARK'.
(Other definitions for denmark that I've seen before include "A country of dark men?" , "North European country" , "Hamlet, Prince of . . . . . . . (7)" , "Aarhus is its second-largest city" , "EU member" .)