Exposed state leaders in new untitled documentary, it took years (6)

I believe the answer is:

nudity

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'exposed state' is the definition.
'nudity' can be an answer for 'state' (nudity is a kind of state). I'm not sure about the 'exposed' bit.

'leaders in new untitled documentary it took years' is the wordplay.
'leaders in' says to take the initial letters.
'took' says to put letters next to each other.
'years' becomes 'y' (abbreviation).
The first letters of 'new untitled documentary' is 'nud'.
'nud'+'it'+'y'='NUDITY'

Can you help me to learn more?

(Other definitions for nudity that I've seen before include "State of being without clothes" , "State of total undress" , "state some sleepers prefer" , "Moving at high speed" , "natural state" .)

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

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