http://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:52016DC0950&from=en
https://www.gcsp.ch/sites/default/files/2026-03/PB_25_Trump_Adm_NSS%3Bdigital.pdf
http://www.ecfr.eu/page/-/Keeping_Europe_Safe_After_Brexit2.pdf
https://blogs.lse.ac.uk/europpblog/2023/08/25/why-the-eu-now-plays-an-increasing-role-in-europes-collective-defence/