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://echo.msk.ru/programs/beseda/2119648-echo/
https://www.inopressa.ru/article/29Dec2017/dailybeast/kgb.html
https://www.kommersant.ru/doc/3508333
https://www.gazeta.ru/comments/2017/12/29_e_11573336.shtml
https://ru.krymr.com/a/28944363.html
https://www.gazeta.ru/politics/2017/12/28_a_11561060.shtml