http://www.ips-journal.eu/regions/europe/article/show/europes-values-wont-defend-themselves-2599/
https://theconversation.com/eu-enlargement-what-does-the-future-hold-227716
https://www.ips-journal.eu/topics/foreign-and-security-policy/belgrade-needs-a-new-foreign-policy-7685/