Fire nukes at sea? I say no (9)

I believe the answer is:

refusenik

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'i say no' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.

'fire nukes at sea?' is the wordplay.
'at sea?' indicates anagramming the letters (I've seen 'at sea' mean this).
'fire'+'nukes'='firenukes'
'firenukes' with letters rearranged gives 'REFUSENIK'.

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(Other definitions for refusenik that I've seen before include "Soviet dissident" , "who refuses to cooperate" , "Protester" .)

I've seen this clue in The Independent.

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