https://www.gov.uk/government/news/uk-eu-agreement-in-respect-of-gibraltar-joint-statement
https://www.rferl.org/a/russia-lithuania-kaliningrad-cutoff/31906501.html?utm_source=POLITICO.EU&utm_campaign=ce30c8dfb0-EMAIL_CAMPAIGN_2022_06_21_05_10&utm_medium=email&utm_term=0_10959edeb5-ce30c8dfb0-190380769
https://www.bakerinstitute.org/media/files/files/ac785a2b/BI-Brief-071817-CES_Russia1.pdf
https://www.sueddeutsche.de/politik/grossbritannien-britischer-buero-zoff-1.4895323