http://www.ng.ru/economics/2019-05-14/1_4_7572_vetro.html
https://www.gazeta.ru/business/2019/05/14/12353725.shtml
https://jamestown.org/program/russia-seeks-to-exploit-escalating-troubles-in-the-middle-east/
https://www.radiosvoboda.org/a/29937341.html
http://www.dsnews.ua/politics/andrey-okara-rossiyskie-spory-ob-ukrainskoy-politike--08052019220000
https://carnegie.ru/commentary/79106
https://www.gazeta.ru/politics/2019/05/13_a_12352387.shtml
https://www.gazeta.ru/politics/2019/05/13_a_12351697.shtml