Hardliner accommodated in borstal in Istanbul (9)

I believe the answer is:

stalinist

'hardliner' is the definition.
(I have seen 'Political hardliner' mean 'stalinist' so perhaps 'hardliner' could also mean 'stalinist')

'accommodated in borstal in istanbul' is the wordplay.
'accommodated in' says the answer is hidden in the clue.
'STALINIST' can be found hidden inside 'borstal in istanbul'.

(Other definitions for stalinist that I've seen before include "Political hardliner" , "Communist" , "Soviet ideologue" .)

I've seen this clue in The Times.

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