Stalin's ultimatum contains abuse (6)

I believe the answer is:

insult

'abuse' is the definition.
('insult' can be a synonym of 'abuse')

'stalin's ultimatum contains' is the wordplay.
'contains' says the answer is hidden in the clue.
'INSULT' can be found hidden inside 'stalins ultimatum'.

(Other definitions for insult that I've seen before include "Show contempt to" , "A deliberately offensive remark" , "Slight - affront" , "Cause offence to" , "Demeaning remark" .)

I've seen this clue in The Times.

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