https://wiiw.ac.at/cefta-trade-and-growth-patterns-fifteen-years-since-establishment-dlp-6508.pdf
https://www.themoscowtimes.com/2019/04/12/kremlin-strategy-doesnt-need-winners-just-players-a65207
https://theconversation.com/ukraine-war-russias-hard-line-at-european-security-meeting-ratchets-up-tensions-another-notch-218938