https://jamestown.org/program/clashes-intensify-between-moscow-and-circassians-on-key-issues/
http://www.kasparov.ru/material.php?id=61169B05C4361§ion_id=444F8A447242B
https://www.svoboda.org/a/31404294.html
https://www.bbc.com/russian/features-57969809
https://www.ng.ru/economics/2021-07-22/1_8204_economics1.html