https://ru.krymr.com/a/raketnyi-konflikt-ssha-i-rossii/29563159.html
https://www.inopressa.ru/article/25Oct2018/nytimes/putin.html
https://www.gazeta.ru/army/2018/10/25/12035521.shtml?updated
http://www.rosbalt.ru/world/2018/10/25/1741771.html
The Russian president issued the warning after President Trump said the U.S. planned to pull out of a nuclear treaty banning some types of missiles.
https://www.nytimes.com/2018/10/24/world/europe/putin-russia-us-nuclear-treaty.html
https://www.inopressa.ru/article/24Oct2018/spiegel/russland.html
https://www.inopressa.ru/article/24Oct2018/guardian/nuclear.html