https://www.inopressa.ru/article/11Oct2018/wsj/aeroflot.html
Nikolai Glushkov, a close associate of the late oligarch Boris Berezovsky, was preparing to testify that Aeroflot was a corrupt instrument of Russian intelligence. Then, on the eve of his court date, he was strangled to death with a dog leash.
http://www.kasparov.ru/material.php?id=5BBDE57B5BEF5
https://ru.krymr.com/a/iz-rossii-otmyt-mundir-ot-korichnevyh-pyaten/29532513.html
http://www.kasparov.ru/material.php?id=5BBBB8B919217
https://www.radiosvoboda.org/a/29530413.html
«Отравителем» Петровым оказался военный врач из ГРУ Александр Мишкин
https://www.gazeta.ru/social/2018/10/08/12013585.shtml
https://www.novayagazeta.ru/articles/2018/10/07/78100-12-let-so-dnya-ubiystva-anny-politkovskoy