https://www.project-syndicate.org/commentary/moodys-downgrade-china-sovereign-debt-rating-by-yu-yongding-2017-06
https://www.osw.waw.pl/sites/default/files/OSW-Report_The-middle-corridor_net.pdf
https://www.washingtonpost.com/outlook/2022/05/11/ukraine-war-expansion-risks-nuclear/?utm_campaign=Brookings%20Brief&utm_medium=email&utm_content=213307436&utm_source=hs_email