https://www.friendsofeurope.org/sites/default/files/media-files/uk_report_web.pdf
https://blogs.lse.ac.uk/europpblog/2023/03/06/the-great-blunder-why-did-putin-miscalculate-over-ukraine/
https://www.bruegel.org/analysis/defending-europe-without-us-first-estimates-what-needed
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/665871/December_-_Joint_technical_note_on_the_comparison_of_EU-UK_positions_on_citizens__rights.pdf