http://expert.ru/2017/11/2/eks-ministr-oboronyi-ssha-pokazal-stsenarij-yadernoj-katastrofyi/
The 20 percent figure is out of date. Russia's holdings produced only 2 percent of U.S. uranium in 2016.
https://www.inopressa.ru/article/31Oct2017/wp/uranium.html
https://jamestown.org/program/militarization-nuclearization-key-features-russian-arctic/
http://carnegie.ru/2017/10/30/ru-pub-73521
http://expert.ru/expert/2017/44/ot-bespokojstva-do-katastrofyi/
http://www.iiss.org/en/regions/russia/does-the-intermediate-nuclear-forces-treaty-have-a-future-9312
http://nvo.ng.ru/wars/2017-10-27/10_971_crisis.html
http://nvo.ng.ru/gpolit/2017-10-27/2_971_red.html
https://www.gazeta.ru/army/2017/10/27/10960028.shtml