Allegations of genocide in Donbas
Russia has falsely claimed that Ukraine has committed genocide against Russian Ukrainians living in the Donbas since the beginning of the Russo-Ukrainian War in 2014. This allegation was repeated by Russia's president Vladimir Putin with regard to the War in Donbas, which involved heavy fighting between Ukraine and Russian separatists for eight years, and was ultimately cited by him as a cause for the Russian invasion of Ukraine in 2022.
Source: Wikipedia — Allegations of genocide in Donbas (CC BY-SA 4.0)