https://theconversation.com/as-the-worlds-conflicts-spread-should-you-be-digging-a-bunker-how-to-think-about-the-future-of-war-221418
https://www.foreignaffairs.com/russian-federation/vladimir-putin-age-chaos
https://www.crisisgroup.org/europe-central-asia/eastern-europe/ukraine/256-peace-ukraine-i-european-war