I'd withdrawn tasteless articles about king's imposed settlement (6)
I believe the answer is:
diktat
'imposed settlement' is the definition.
'i'd withdrawn tasteless articles about king's' is the wordplay.
'withdrawn' says the letters should be written backwards.
'tasteless articles' becomes 'tat' (I've seen this before).
'about' says to put letters next to each other.
'king' becomes 'k'.
'id' in reverse letter order is 'di'.
'tat' after 'k' is 'ktat'.
'di'+'ktat'='DIKTAT'
(Other definitions for diktat that I've seen before include "Categorical statement" , "An order that allows no opposition" , "Categorical decree" , "Dogmatic statement" , "Harsh order issued by authority" .)