https://www.thejc.com/lets-talk/all/russia-has-used-antisemitism-as-a-political-weapon-for-years-5KlH6yilhMXchkkObCLBChIn 2008, thousands of secret KGB documents were declassified in Ukraine. The files detailed horrific crimes against humanity by the Soviet Union in the 1930s during the mass famine.
But they also revealed evidence of how Russian intelligence agencies falsified reports and fabricated witness statements against Ukrainian liberation insurgents. In essence, they accused the Ukrainian nationalists of crimes that they demonstrably never committed.
One of these fake crimes was the murder of vast numbers of Jews. The dossier disclosed in devastating detail how the KGB falsified testimony.
This discovery was so significant that Valentyn Nalyvaichenko, then head of the Ukrainian security service, flew to Tel Aviv and delivered the files to his counterpart in Mossad and the Israel minister of Public Security.
The article is by Mark Hollingsworth, author of Agents of Influence — How the KGB Subverted Western Democracies (Oneworld, 2023). It would be good to know more about this. Though it is presumably not the author's intention, it would tend to substantiate revisionist claims about the role of the Soviets in creating forgeries. Other instances of this came to the light after the fall of the Soviet Union in 1990 and have been covered in revisionist literature.