Union leader forcing insurrection (8)

I believe the answer is:

uprising

'insurrection' is the definition.
(I know that insurrection can be written as uprising)

'union leader forcing' is the wordplay.
'leader' says to take the initial letters.
'forcing' becomes 'prising' (as in prising something open).
The initial letter of 'union' is 'u'.
'u'+'prising'='UPRISING'

(Other definitions for uprising that I've seen before include "Organised opposition to authority" , "Rebellion, revolt" , "Mutiny" , "Open rebellion" , "Insurrection or revolt" .)

I've seen this clue in The Times.

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