
https://rusi.org/explore-our-research/publications/commentary/nato-vilnius-summit-bucharest-20

https://wiiw.ac.at/keeping-friends-closer-why-the-eu-should-address-new-geoeconomic-realities-and-get-its-neighbours-back-in-the-fold-dlp-6487.pdf

https://www.crisisgroup.org/europe-central-asia/eastern-europe/ukraine/261-peace-ukraine-iii-costs-war-donbas