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://ru.krymr.com/a/28945910.html
https://echo.msk.ru/programs/beseda/2119648-echo/
http://intersectionproject.eu/ru/article/russia-europe/kak-vengriya-vybiraet-s-kem-druzhit
https://www.inopressa.ru/article/29Dec2017/dailybeast/kgb.html
https://zn.ua/internal/ukraina-2018-doroga-mezhdu-vyzovami-i-riskami-no-doroga-270629_.html
https://republic.ru/posts/88740
http://www.rosbalt.ru/world/2017/12/28/1671249.html
https://www.gazeta.ru/sport/2017/12/28/a_11564102.shtml