https://www.ng.ru/economics/2021-12-06/1_8319_export.html
https://www.dw.com/ru/kommentarij-pochemu-ubijstvo-litvinenko-paralizovalo-zapad/a-59904542
https://www.svoboda.org/a/31572896.html
https://www.radiosvoboda.org/a/news-rosija-sekretnyj-export/31565554.html
https://www.rbc.ru/newspaper/2021/11/17/6193a5839a7947675beb0e7f
https://www.atlanticcouncil.org/blogs/iransource/is-iran-going-on-an-arms-shopping-spree-in-moscow/
https://jamestown.org/program/chechen-strongman-drives-new-wedge-between-russia-and-turkey/