https://theconversation.com/russias-disastrous-decision-to-invade-poland-in-1920-has-parallels-with-putins-rhetoric-over-ukraine-213016
http://www.transfrontier.eu/regions/ireland-northern-ireland/
https://blogs.lse.ac.uk/europpblog/2021/09/30/czech-election-assessing-the-foreign-policy-positions-of-each-of-the-main-parties/