
https://theconversation.com/las-leyes-de-lanchester-guerras-y-ecuaciones-222469

https://www.sipri.org/sites/default/files/2026-03/fs_2603_at_2025.pdf

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