https://theins.ru/politika/234485
https://www.nytimes.com/2020/09/02/world/europe/kremlin-putin-navalny-poisoning-russia.html
https://www.mk.ru/social/2020/09/02/sto-let-vneshney-razvedke-dzerzhinskiy-protiv-savinkova.html
https://www.inopressa.ru/article/02Sep2020/nytimes/tensions.html
https://www.radiosvoboda.org/a/news-navalny/30817122.html
https://www.radiosvoboda.org/a/29097981.html
https://www.nytimes.com/2020/09/01/us/politics/us-russia-military-tensions.html
https://ru.krymr.com/a/rossia-i-amerika-v-sirii-balansirovanie-na-grani-voyny/30806157.html
https://www.eurointegration.com.ua/articles/2020/08/25/7113578/