Called newspaper about its leader (4)

I believe the answer is:

rang

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

'called' is the definition.
(called on the phone)

I cannot understand how the rest of the clue works.

(Other definitions for rang that I've seen before include "Chimed" , "Made tolling sound or phoned" , "Phoned; reverberated" , "(Of bell) sounded" , "Made a phone call" .)

I've seen this clue in The Telegraph.

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.