
https://www.politico.eu/article/eu-tunisia-migration-funds-von-der-leyen-agreement/

http://researchbriefings.files.parliament.uk/documents/CBP-7840/CBP-7840.pdf

https://www.nao.org.uk/wp-content/uploads/2016/02/Managing-the-supply-of-NHS-clinical-staff-in-England.pdf