https://www.ips-journal.eu/topics/democracy-and-society/serbias-cunning-kosovo-deflection-6754/
https://www.bruegel.org/wp-content/uploads/2021/10/Storms-Ahead_AGH_chp6.pdf
https://ecfr.eu/wp-content/uploads/Ambiguous-alliance-Neutrality-opt-outs-and-European-defence.pdf
https://www.cer.eu/sites/default/files/insight_JS_JP_17.1.23.pdf