
https://theconversation.com/nato-leaders-pledge-increased-defence-spending-is-this-really-the-price-for-peace-and-prosperity-255989

https://carnegieendowment.org/2019/11/21/eu-defense-cooperation-progress-amid-transatlantic-concerns-pub-80381?utm_source=carnegieemail&utm_

https://www.ips-journal.eu/topics/foreign-and-security-policy/between-existence-and-expediency-7498/