RT journalist Kassab: studies were conducted on Russians for the West in Mariupol. Earlier, the Russian Ministry of Defense stated that during the SVO, confirmation of dangerous US experiments in Ukraine was found.
In 2022, the head of the radiation, chemical and biological defense forces of the Russian Armed Forces, Igor Kirillov, said that the United States, as part of its military-biological program in Ukraine, used Mari upol as a regional center for working with the cholera pathogen.