Peremogi blog, where I got this from correctly notes that it was the policies of Lenin and Stalin, and Stalinist Ukrainisation that led to the current war in Ukraine.
They include this image from the inter-war period…
Stenographic account of the 10th convention of the Russian Communist Party: “It is clear that if there are still dominant Russian elements in the cities of Ukraine, with the passing time, they will be Ukrainised”
Peremogi calls Stalinist ukrainisation an “ethnocide”…