
http://www.ips-journal.eu/storage/topics/european-union/article/show/stars-in-their-eyes-2515/

https://ecfr.eu/wp-content/uploads/Ambiguous-alliance-Neutrality-opt-outs-and-European-defence.pdf

https://www.project-syndicate.org/commentary/how-to-judge-morality-of-foreign-policy-by-joseph-s-nye-2020-03