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https://www.radiosvoboda.org/a/belanovskyy-navalny-otruyennya-reaktsiya/31014835.html
https://www.rbc.ru/newspaper/2020/12/23/5fe20a529a794712f0a8ae38
https://www.ng.ru/politics/2020-12-23/1_8047_neutralization.html
https://www.rosbalt.ru/russia/2020/12/23/1879515.html
https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(20)32644-1/fulltext
https://taz.de/Russland-nach-Nawalny-Enthuellung/!5735380/