Yes, Russia has assassinated people with knowledge, USA and UK were considering assassination of Nazi atomic scientists, ..
Iranian Regime targets those with knowledge
He was the subject of a death fatwa issued in 1989 by Iran's Ayatollah Khomeini, which forced him into hiding for nearly a decade, and he later survived a stabbing attack in August 2022 at the Chautauqua Institution that left him blind in his right eye.
Scientists, Journalists .. many civilians are and have been targets
State targeting of scientists, often framed as "scientist targeting" or "targeted killing," has been a strategic tool since the nuclear age began, primarily aimed at degrading adversaries' weapons programs.
Historical data from 1944 to 2025 identifies nearly 100 instances where nations targeted scientists working on nuclear programs
assassinations not unusual ..
Georgi Markov and
Alexander Litvinenko were both dissidents assassinated in London using poison, linking Cold War-era tactics to modern Russian intelligence operations.
Georgi Markov, a Bulgarian dissident and BBC commentator, was killed on September 7, 1978, when he was jabbed in the thigh with a poisoned umbrella tip containing ricin on Waterloo Bridge. Despite wide suspicions of Bulgarian and Soviet involvement, the case formally remains open with no convictions, and the British government's response was limited due to the political climate of détente.