https://www.europarl.europa.eu/meetdocs/2009_2014/documents/deea/dv/2203_07/2203_07en.pdf
https://www.bruegel.org/sites/default/files/2022-11/WP%2018.pdf
https://www.politico.eu/article/spain-and-uk-reach-eleventh-hour-deal-to-avoid-a-hard-border-in-gibraltar/
https://blogs.timesofisrael.com/the-unrwa-dilemma/