https://visegradinsight.eu/western-balkans-serbia-kosovo-deal-vejvoda/
http://ec.europa.eu/economy_finance/publications/pages/publication16004_en.pdf
https://www.ips-journal.eu/topics/democracy-and-society/filling-the-vacuum-7025/
https://www.foreignaffairs.com/articles/ukraine/2022-03-04/what-if-russia-loses