Soviet war crimes in the Soviet–Afghan War
Atrocity crimes in the Soviet–Afghan War were systematically perpetrated on a large scale by the Soviet Union and its allies from 1979 to 1989, with several scholars and academics concluding that the Soviet military forces carried out a campaign of genocide against Afghans. The war resulted in the deaths of between 1,000,000 and 3,000,000 Afghans.
Source: Wikipedia — Soviet war crimes in the Soviet–Afghan War (CC BY-SA 4.0)