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://www.vedomosti.ru/opinion/articles/2017/12/27/746652-hotim-peremen
https://www.levada.ru/2017/12/26/17369/
https://www.levada.ru/2017/12/25/nostalgiya-po-sssr/
https://www.kommersant.ru/doc/3487183
https://www.levada.ru/2017/12/24/samye-samye-v-2017-godu/