
https://www.global-counsel.co.uk/sites/default/files/analysis/insight/download/Hard%20and%20Soft%20Political%20Risk.pdf

http://www.ema.europa.eu/docs/en_GB/document_library/Press_release/2017/10/WC500236021.pdf

https://centreonconstitutionalchange.ac.uk/sites/default/files/2021-04/Union%20at%20the%20Crossroads.pdf