
http://www.ips-journal.eu/regions/europe/article/show/the-new-east-bloc-is-open-for-business-2523/

https://www.brookings.edu/blog/order-from-chaos/2021/03/30/the-us-military-must-plan-for-encounters-with-private-military-companies/?utm_campaign=Brookings%20Brief&utm_medium=email&utm_content=118778216&utm_source=hs_email

https://www.theatlantic.com/ideas/archive/2021/08/kabul-airport-bombing-afghanistan/619906/?utm_source=newsletter&utm_medium=email&utm_campaign=27%2F08%2F21