Former PM threatened everyone after rebuff? Only some (4)
I believe the answer is:
eden
'former pm' is the definition.
(Anthony Eden, UK prime minister 1955-1957)
'threatened everyone after rebuff? only some' is the wordplay.
'only some' indicates the answer is hidden within the clue.
'rebuff?' says the letters should be written backwards (I've seen 'rebuffed' mean this).
'nede' can be found hidden inside 'threatened everyone after'.
'nede' reversed gives 'EDEN'.
(Other definitions for eden that I've seen before include "Our leader once" , "happy state" , "Old Testament garden" , "The - - Project, Cornwall" , "Old PM" .)