https://www.piie.com/sites/default/files/2023-04/pb23-3.pdf
https://www.swp-berlin.org/publications/products/comments/2022C35_Turkey_RelationsRussia.pdf
https://www.sussex.ac.uk/webteam/gateway/file.php?name=briefing-paper-1.pdf&site=18
https://www.foreignaffairs.com/articles/united-states/2021-09-27/kremlins-strange-victory?utm_campaign=Brookings%20Brief&utm_medium=email&utm_content=164798306&utm_source=hs_email