https://www.ostro.org/general/politics/articles/555805/
http://www.rosbalt.ru/russia/2018/09/27/1735123.html
https://www.rbc.ru/newspaper/2018/09/27/5baba9f09a7947478967c080
https://www.kommersant.ru/doc/3753080
One of the trained assassins wanted for poisoning Sergei Skripal is a decorated colonel in Russian military intelligence given the country’s highest award by Vladimir Putin.
https://www.ostro.org/lugansk/society/articles/555679/
https://www.gazeta.ru/social/2018/09/26/11999413.shtml
https://www.bbc.com/russian/news-45588026