https://www.atlanticcouncil.org/blogs/iransource/is-iran-going-on-an-arms-shopping-spree-in-moscow/
https://theins.ru/politika/246166
https://novayagazeta.ru/articles/2021/10/07/svoikh-ne-raskryvaem
https://novayagazeta.ru/articles/2021/10/06/zakazchik-izvesten-emu-prosto-vydali-indulgentsiiu
https://jamestown.org/program/the-realities-of-russian-military-shipbuilding-part-one/
https://www.rbc.ru/newspaper/2021/10/04/61571a279a79478e0bc0b011