
https://wiiw.ac.at/keeping-friends-closer-why-the-eu-should-address-new-geoeconomic-realities-and-get-its-neighbours-back-in-the-fold-dlp-6487.pdf

https://theconversation.com/germany-steps-up-to-replace-unreliable-us-as-guarantor-of-european-security-257735

https://ec.europa.eu/info/sites/default/files/joint_communication_-_defence_investment_gaps_analysis_and_way_forward_0.pdf