Poisonous individual's extraordinary dig at NATO (5,4)

I believe the answer is:

giant toad

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'poisonous individual's' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.

'extraordinary dig at nato' is the wordplay.
'extraordinary' is an anagram indicator.
'dig'+'at'+'nato'='digatnato'
'digatnato' with letters rearranged gives 'GIANT TOAD'.

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