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https://www.mk.ru/politics/2020/12/23/trista-spartancev-putina-zachem-kremlyu-voyna-v-afrike.html
https://lenta.ru/articles/2020/12/23/rus_azer/
https://www.ng.ru/politics/2020-12-23/1_8047_neutralization.html
https://www.vedomosti.ru/opinion/articles/2020/12/22/852045-vodorodnoe-sotrudnichestvo
https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(20)32644-1/fulltext