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://politeka.net/reading/561811-natsbezpeka-ukrayini-peremogi-porazki-ta-stsenariyi-na-2018-rik/
https://www.inopressa.ru/article/29Dec2017/dailybeast/kgb.html
https://ru.krymr.com/a/28944363.html
https://www.svoboda.org/a/28942416.html
https://www.segodnya.ua/regions/donetsk/donbass-2018-prognozy-perspektivy-i-riski-1101877.html
https://republic.ru/posts/88740