http://ru.krymr.com/a/28083580.html
http://www.thetimes.co.uk/article/russias-strength-and-the-defence-of-the-west-wjsghrn2r%20
https://www.novayagazeta.ru/articles/2016/10/29/70351-chi-krylya-nesut-smert
https://www.novayagazeta.ru/articles/2016/10/29/70350-siriyskiy-tsugtsvang
https://www.novayagazeta.ru/articles/2016/10/29/70348-libo-asad-libo-rossiya