https://www.rbc.ru/newspaper/2019/04/19/5cb7574c9a7947cd14f64c3c
https://jamestown.org/program/moscow-touts-the-threat-of-direct-east-west-confrontation/
https://republic.ru/posts/93552
https://www.kommersant.ru/doc/3945938
https://www.svoboda.org/a/29879125.html
http://www.kasparov.ru/material.php?id=5CB4A54065757
https://jamestown.org/program/putins-russia-symbolically-reenacts-stalins-push-into-europe/
http://www.ng.ru/politics/2019-04-11/100_190411explosion.html
https://www.bbc.com/russian/news-47864321