https://www.iai.it/sites/default/files/iaip1924.pdf
http://www.euronews.com/2017/11/30/which-eu-countries-sell-arms-to-saudi-arabia-
https://www.friendsofeurope.org/sites/default/files/media-files/uk_report_web.pdf
https://media.defense.gov/2022/Mar/28/2002964702/-1/-1/1/NDS-FACT-SHEET.PDF