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
https://rusi.org/commentary/speaking-truth-power-problem-prime-minister-johnsons-new-national-security-adviser
https://www.crisisgroup.org/europe-central-asia/eastern-europe/ukraine/256-peace-ukraine-i-european-war