Raab corrected says these are LAS countries (4,6)

I believe the answer is:

arab states

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'these are las countries' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.

'raab corrected says' is the wordplay.
'corrected' indicates anagramming the letters.
'says' becomes 'states' (state can mean to say or declare).
'raab' is an anagram of 'arab'.
'arab'+'states'='ARAB STATES'

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