https://www.wilsoncenter.org/article/russian-iranian-relations-2016-partners-convenience
https://www.chathamhouse.org/expert/comment/businesses-are-chipping-away-sanctions-crimea-and-donbas
http://russiancouncil.ru/inner/?id_4=8243
http://inosmi.ru/politic/20161018/238035746.html
http://inosmi.ru/politic/20161018/238039596.html
https://lenta.ru/articles/2016/10/18/oldluka/
https://focus.ua/world/357901/