>>509479352 (OP)>Since the beginning of 2022, numerous Russia-related people, particularly businessmen and officials, have died under what some sources suggest were suspicious circumstances.[1][2][3][4] Incidents include individuals who have suspiciously fallen out of windows, killed themselves, and died unexpectedly in accidents. https://en.wikipedia.org/wiki/Suspicious_Russia-related_deaths_since_2022
That's just since 2022 but the article also says
>On 6 July 2022, CNN Portugal described the group as "millionaires with direct or indirect links to the Kremlin found dead in a mystery scenario since the beginning of the year".[5] It referred to a previous investigation by USA Today, which concluded that "38 Russian businessmen and oligarchs close to the Kremlin died in mysterious or suspicious circumstances between 2014 and 2017."[5] The phenomenon has been called "sudden Russian death syndrome" or "sudden oligarch death syndrome", a play on sudden arrhythmic death syndrome.[6][7] A number of them died by falling from heights, including possible defenestrations.[7]