https://trade.ec.europa.eu/doclib/docs/2021/september/tradoc_159803.pdf
https://www.sfo.gov.uk/2018/03/22/sfo-recovers-4-4m-from-corrupt-diplomats-in-chad-oil-share-deal/
https://ukandeu.ac.uk/trade-migration-and-brexit/
https://www.thelancet.com/action/showPdf?pii=S2214-109X%2825%2900189-5