https://www.nato.int/nato_static_fl2014/assets/pdf/pdf_2018_03/20180315_SG_AnnualReport_en.pdf
https://www.ips-journal.eu/topics/foreign-and-security-policy/the-world-of-tomorrow-7101/
https://www.ips-journal.eu/topics/foreign-and-security-policy/yes-to-arms-aid-no-to-western-integration-6607/
https://www.washingtonpost.com/graphics/2020/world/national-security/cia-crypto-encryption-machines-espionage/?utm_campaign=b064de4ef1-EMAIL_CAMPAIGN_2020_02_12_05_47&utm_medium=email&utm_source=POLITICO.EU