http://www.ng.ru/politics/2017-06-29/3_7018_kudrin.html
http://www.ng.ru/politics/2017-06-29/1_7018_navalny.html
http://www.kasparov.ru/material.php?id=5954A85DE39B5
Constanze Stelzenmüller testified before the U.S. Senate Select Committee on Intelligence on the Russian interference on the upcoming German federal elections, discussing how Europeans should deal with Russia's attempts to influence European polities.
https://www.brookings.edu/testimonies/the-impact-of-russian-interference-on-germanys-2017-elections/
http://www.ng.ru/politics/2017-06-28/1_7017_navalny.html
http://www.rosbalt.ru/blogs/2017/06/27/1626391.html
http://www.kasparov.ru/material.php?id=59526D370B412
https://ru.krymr.com/a/28579421.html