
https://www.ips-journal.eu/topics/foreign-and-security-policy/lessons-we-can-teach-7439/

https://ukandeu.ac.uk/why-is-a-return-to-power-sharing-in-northern-ireland-so-difficult/?mc_cid=ca4dfba7df&mc_eid=815b1928ec

https://carnegieendowment.org/files/2-24_Lehne-EU_Geopolitics.pdf