Crossword Genius

Waiting for security pass, as Stalin's nephew might have said? (9)

Ross

I believe the answer is:

uncleared

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'waiting for security pass' is the definition.
(needing security clearance)

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Another definition for uncleared that I've seen is " not given official approval?".)

I've seen this clue in The Guardian.
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