http://www.kasparov.ru/material.php?id=5A4F655AD7B48
While Ukraine’s military has many honored volunteers fighting to defend their border, Russia’s expeditionary forces often are contractors fighting for pay, and dying in silence.
https://focus.ua/country/388184/
A KGB manual showed how valuable—and how treacherous—Russian émigrés could be. Did KGB veteran Vladimir Putin learn those lessons?
https://www.thedailybeast.com/the-kgb-playbook-for-turning-russians-worldwide-into-agents
https://www.radiosvoboda.org/a/28945900.html
https://www.kommersant.ru/doc/3494223
https://www.inopressa.ru/article/29Dec2017/dailybeast/kgb.html
https://ru.krymr.com/a/28944363.html
https://ru.krymr.com/a/28941690.html
http://www.rosbalt.ru/world/2017/12/27/1671345.html