https://www.brookings.edu/articles/douzheng-unraveling-xi-jinpings-call-for-struggle/
https://www.cgdev.org/blog/beyond-brexit-end-eu-uk-free-movement-should-reset-debate-uk-migration-policy
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/60641/cabinet-manual.pdf