Heartless misjudgment by European politician and leader (7)
I believe the answer is:
emperor
'leader' is the definition.
(I've seen this before)
'heartless misjudgment by european politician' is the wordplay.
I cannot quite see how this works, but
'by' could be 'per' (I've seen this in another clue) and 'per' is present in the answer.
'european' could be 'e' (abbreviation e.g. EU) and 'e' is present in the answer.
The remaining letters 'mor' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'and' acts as a link.
Can you help me to learn more?
(Other definitions for emperor that I've seen before include "Roman leader" , "Ruler - penguin - size of paper" , "Japanese version of the king" , "Character in 24 ac" , "Monarch" .)