https://jamestown.org/program/the-eu-russia-antagonism-stretches-from-ukraine-to-the-arctic/
https://www.ng.ru/armies/2021-10-07/2_8272_fleet.html
https://www.rosbalt.ru/blogs/2021/10/07/1924690.html
https://www.rbc.ru/newspaper/2021/10/07/615da0ca9a7947e2cd6453c1
https://www.ng.ru/armies/2021-09-21/1_8257_army.html
https://novayagazeta.ru/articles/2021/09/08/mne-by-slavian