https://wiiw.ac.at/are-western-trade-sanctions-effective-dlp-6981.pdf
https://ukandeu.ac.uk/explainers/the-protocol-on-ireland-northern-ireland/?mc_cid=2bd4dc8e93&mc_eid=815b1928ec
https://www.politico.eu/article/eu-courts-western-balkans-as-russia-china-shadows-loom/
https://ecfr.eu/wp-content/uploads/Ambiguous-alliance-Neutrality-opt-outs-and-European-defence.pdf