https://theconversation.com/russias-disastrous-decision-to-invade-poland-in-1920-has-parallels-with-putins-rhetoric-over-ukraine-213016
https://www.sussex.ac.uk/webteam/gateway/file.php?name=briefing-paper-1.pdf&site=18
https://www.ips-journal.eu/topics/foreign-and-security-policy/latin-americas-unarmed-humanitarianism-7108/