Guard barring the latest of Russians seeking access? (5)

I believe the answer is:

entry

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'access?' is the definition.
(I know that entry is a type of access)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for entry that I've seen before include "Record - number of contestants" , "candidate" , "Admittance" , "Ingress, portal" , "field" .)

I've seen this clue in The Independent.

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