Agent on vacation was resting back in Crimean resort (5)

I believe the answer is:

yalta

I'm a little stuck... Click here to teach me more about this clue!

'crimean resort' is the definition.
(I've seen this before)

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

(Other definitions for yalta that I've seen before include "Crimean resort city" , "Crimean resort and seaport" , "Churchill, Roosevelt and Stalin met here in nineteen forty five" , "conference centre" , "Conference location" .)

I've seen this clue in The Independent.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.