Washington Post:
Senior Polish officials said the plot crossed a dangerous threshold. “This is the first sign that the Russians are trying to organize sabotage — even terrorist attacks — in Poland,” said Stanislaw Zaryn, who oversees the country’s security services, in a recent interview with The Washington Post.[^1]
On a historic note, #USSR #Russia organised sabotage, mass protests and assassinations in interwar #Poland through the whole 1920-1930’s. One of the largest was 13 October 1923 bombing at the Warsaw Citatel (28 killed, 89 wounded) which was very similar to the 2014 GRU Vrbětice bombing in #Czechia, with the exception that the Citatel was in the center of Polish capital.[^2]
Soviet Union also created and maintained terrorist networks in Western Europe, most notably RAF (Baader–Meinhof Group ), who crossed into communist East Germany and Poland to recover and hide after successful attacks in Germany. KGB also supervised and supported PLO (Palestine Liberation Organization), Abu Nidal organisation (who had a regular office in communist Poland) and a dozen of other terrorist organisations in Arab and Latin America countries.[^3]
[^1]: https://www.washingtonpost.com/world/2023/08/18/ukraine-weapons-sabotage-gru-poland/
[^2]: https://en.wikipedia.org/wiki/Terrorism_and_the_Soviet_Union#Support_of_terrorist_organizations
[^3]: https://en.wikipedia.org/wiki/State-sponsored_terrorism#Russia