Russian agents are thought to have committed numerous acts, almost all of which could be considered acts of war, on EU/UK soil, or against EU/UK nationals
* Poisoning of the Skripals with a chemical warfare agent, one dead, 2018, Salisbury, England, UK [0]
* Poisoning of Alexander Litvinenko with a radioisotope, one dead, 2006, London, England, UK [1]
* Vrbětice ammunition warehouse explosions, one dead, 2014, Zlín Region, Czechia [2]
* Jamming of GPS signals used by EU President Ursula von der Leyen's jet, 2025, Bulgaria [3]
* Arson of the Marywilska 44 shopping center, 2024, Warsaw, Poland [4]
* Shooting down of Malaysian Airlines Flight 17 over the Donbas, 2014, 283 dead, most of them Netherlands citizens [5]
* Sabotage of underwater telecommunications cables, railway lines, cyberattacks, probing airspace with armed aircraft, and on and on - just Google it, I don't have enough time to mention all of these.
... you were saying?
[0] https://en.wikipedia.org/wiki/Poisoning_of_Sergei_and_Yulia_...
[1] https://en.wikipedia.org/wiki/Alexander_Litvinenko
[2] https://en.wikipedia.org/wiki/2014_Vrbětice_ammunition_wareh...
[3] https://apnews.com/article/russia-europe-jamming-spoofing-gp...
[4] https://notesfrompoland.com/2025/05/12/poland-confirms-russi...
[5] https://www.britannica.com/event/Malaysia-Airlines-flight-17