https://www.kommersant.ru/doc/4066930
Sensors that might have shed light on a mysterious nuclear accident stopped sending data in the days afterward. Technical problems were blamed. Then an official said Russia did not have to share data.
https://www.nytimes.com/2019/08/20/world/europe/radiation-russia-nuclear-accident.html
https://www.gazeta.ru/politics/2019/08/20_a_12589411.shtml
http://www.rosbalt.ru/world/2019/08/20/1798151.html
https://www.kommersant.ru/doc/4066780
https://www.vedomosti.ru/opinion/articles/2019/08/20/809163-perelopatit-istoriyu
https://lenta.ru/articles/2019/08/20/st_vs_hl/
https://www.bbc.com/russian/features-49360642
https://www.inopressa.ru/article/19Aug2019/nzz/leningrad.html