
https://www.institutmontaigne.org/en/expressions/franco-german-couple-duo-duel-helm-european-union

https://henryjacksonsociety.org/wp-content/uploads/2020/12/HJS-Russian-Sanctions-Report-web.pdf

https://publications.parliament.uk/pa/ld201719/ldselect/ldeucom/387/387.pdf