
https://rusi.org/sites/default/files/20200221_roberts_integrated_review.pdf

https://isc.independent.gov.uk/wp-content/uploads/2021/01/20200721_Russia_Press_Notice.pdf

https://economy-finance.ec.europa.eu/document/download/f5827354-8501-49cb-bf2d-13f2f7a9444f_en?filename=dp199_en.pdf