Sherry sherry !
It has been around for a long time
substitution of a place name for a person or official
Clearly a metaphor - poss a metonym
A place is often used as a metonym for a government or other official institutions,
we were told that hospitals often had two names ( Royal Manchester Children's Hospital - Pendlebury ) NOT because naming something gave you power over it - see no 1 of the ten commandments BUT because you might invoke and become ill yourself
like we whisper 'wape' for forced kissig of women
https://en.wikipedia.org/wiki/Metonymy
this is not too heavy is it?
I like the ones now outdated ( scotland yard is er not now at scotland yard)
the French for Sc yd is Rue des orfevres - Brussels, I think the site used to be where the Duchess of Richmond gave the famous barl the night before Waterloo
Mayor of Paree is often referred to Hotel Matignon
and Foreign Ministry - Quai d'Orsay
when the Brits were wisely ruling Ireland, the gubmint was called Dublin Castle or The castle.
I suppose Zelensky is referred to as the Bunker
Turkey - the Sublime Porte - you can go and stare at it- One of the gates to the Topkapi, which was the entry for ambassadors.
https://en.wikipedia.org/wiki/Sublime_Porte
Imperial China - the celestial throne
oh, Min of Health - Elephant and Castle