Posted order from dictator (6)
I believe the answer is:
despot
'dictator' is the definition.
(despot is a kind of dictator)
'posted order' is the wordplay.
'order' indicates an anagram.
'posted' anagrammed gives 'DESPOT'.
'from' is the link.
(Other definitions for despot that I've seen before include "has first of shocks in store" , "Arbitrary ruler" , "who treats others badly?" , "Caesar for one" , "nasty ruler?" .)