
https://blogs.lse.ac.uk/brexit/2021/02/26/future-british-european-security-relations-are-a-matter-of-trust/

http://www.ecfr.eu/page/-/Keeping_Europe_Safe_After_Brexit2.pdf

https://www.rescue-uk.org/sites/default/files/document/2666/rusi-irc-essay-collection-complete1.pdf