https://www.depo.ua/ukr/svit/koli-vinischuvachi-izrayilyu-vdaryat-po-rosiyskiy-armiyi-v-siriyi-20170720609218
http://www.rbc.ru/newspaper/2017/06/16/59429d019a79476202fd9b73
https://www.nytimes.com/2017/06/09/world/europe/aleksei-navalny-russia-election-putin.html?_r=0