The Po-210 used to poison Mr Litvinenko was made at the Avangard facil...
wikipedia - 28 Feb 2022The Po-210 used to poison Mr Litvinenko was made at the Avangard facility in Sarov, Russia. One of the isotope-producing reactors at the Mayak facility in Ozersk, Russia, was used for the initial irradiation of bismuth. In my opinion, the Russian state or its agents were responsible for the poisoning.