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.inopressa.ru/article/29Dec2017/dailybeast/kgb.html
http://www.rosbalt.ru/russia/2017/12/29/1672008.html
https://www.gazeta.ru/business/2017/12/29/11572604.shtml
https://www.kommersant.ru/doc/3512394
https://www.kommersant.ru/doc/3512393
https://www.kommersant.ru/doc/3511568
http://www.finanz.ru/novosti/aktsii/banki-rf-na-grani-sistema-ispytyvaet-nebyvaly-stress-1012303927