Exiled Ugandan (4)
I believe the answer is:
amin
'exiled ugandan' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for amin that I've seen before include "Dictator Idi --" , "Ugandan dictator" , "Former African despot" , "'Idi ..., former Ugandan ruler (4)'" , "Brutal dictator" .)