Rogue nation, if kept under threat (2,10)

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2,5,5

2,10

at knife point

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'under threat' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.

'rogue nation if kept' is the wordplay.
'rogue' indicates an anagram (letters go rogue).
'nation'+'if'+'kept'='nationifkept'
'nationifkept' with letters rearranged gives 'AT KNIFE POINT'.

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I've seen this clue in The Guardian.

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