Strategy, something expected of diplomat in charge (6)
I believe the answer is:
tactic
'strategy' is the definition.
(I've seen this in another clue)
'something expected of diplomat in charge' is the wordplay.
I cannot quite see how this works, but
'in charge' could be 'ic' (abbreviation for 'in charge') and 'ic' is present in the answer.
The remaining letters 'tact' 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).
Can you help me to learn more?
(Other definitions for tactic that I've seen before include "Strategy carefully planned to achieve a specific end" , "Device" , "Scheme or ploy used in battle, sport, etc, often within an overall strategy" , "Ruse, strategy" , "Action designed to achieve a specific end" .)