Defenders of Asian drug organisation (9)

I believe the answer is:

guardians

'defenders' is the definition.
(I know this)

'asian drug organisation' is the wordplay.
'organisation' indicates anagramming the letters.
'asian'+'drug'='asiandrug'
'asiandrug' is an anagram of 'GUARDIANS'.

'of' is the link.

I've seen this clue in the Sydney Morning Herald.

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