https://foreignpolicy.com/2023/06/23/who-blew-up-the-nord-stream-pipeline/
https://www.ips-journal.eu/topics/foreign-and-security-policy/how-the-eu-can-secure-its-position-in-central-asia-6502/
https://ecipe.org/wp-content/uploads/2021/09/ECI_21_PolicyBrief_13_2021_LY02.pdf
https://theconversation.com/que-trama-putin-en-africa-213335