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.inopressa.ru/article/29Dec2017/dailybeast/kgb.html
https://www.kommersant.ru/doc/3512319
https://ru.krymr.com/a/28944363.html
https://ru.krymr.com/a/28941690.html
https://www.vedomosti.ru/opinion/articles/2017/12/27/746652-hotim-peremen
https://www.kommersant.ru/doc/3511813
http://www.ng.ru/politics/2017-12-27/3_7145_prokuratura.html