Z taking out his political foes
Well. It's not so cut and dried as that (like much of Ukraine and Russia).
Isn't Ilya Kiva one of the ones who supported Russia's invasion of Ukraine to "liberate Ukraine" as some kind of people united with Russia? And isn't he the one who said Russia should even use WMD's against Ukraine? And he was killed where? According to the article he was in Moscow, Ukraine's enemy's capitol.
This is one of those few times I have to side with Z.