https://www.inopressa.ru/article/31Mar2021/guardian/un.html
https://www.radiosvoboda.org/a/konventsiya-montre-nato-rosiya-chorne-more/31178583.html
https://www.nytimes.com/2021/03/30/world/europe/ukraine-russia-fighting.html
https://www.politico.com/news/2021/03/30/russia-suspected-emails-478541
https://www.radiosvoboda.org/a/rosiya-eksport-iz-krymu-nezakonni-skhemy/31177858.html
https://www.radiosvoboda.org/a/krym-voienna-stratehia-ukrainy-ahresia-rosii/31178327.html
https://www.radiosvoboda.org/a/rosiyska-tehnika-na-donbasi/31171124.html