Threaten current politician facing termination (6)
I believe the answer is:
impend
'threaten' is the definition.
(thesaurus)
'current politician facing termination' is the wordplay.
'current' becomes 'i' (symbol for electric current).
'politician' becomes 'mp'.
'facing' says to put letters next to each other.
'termination' becomes 'end' (I've seen this before).
'i'+'mp'+'end'='IMPEND'
(Other definitions for impend that I've seen before include "Threaten - be about to happen" , "Be looming" , "Become imminent" , "seen to be around the corner" , "appearing to be imminent" .)