The book and the movie are quite rough, raw and extradry - i don’t mean this in a bad way. The mood reminds me more of eastern productions like tarkowsky (stalker) and the like.

"Bond for grownups"

Also called "stale beer" spy fiction to emphasize its lack of glamour and that settings like dive bars are more common in it than fancy casinos and cocktail parties.

https://tvtropes.org/pmwiki/pmwiki.php/Main/SpyFiction

ah right, it starts that way, been a long time already