Vrajolli, Mentor. Kosovo Security Barometer. Seventh Edition. Pristina: Kosovar Centre for Security Studies, 2018.
Latvia Country Risk Report - Q3 2018. London, United Kingdom: Business Monitor International, 2018.
Latvia: Executive Summary. Englewood, CO: IHS Markit, 2018.
Latvia Military Strength. GlobalFirepower.com, 2018.
Tagarev, Todor. Main Avenues for Hybrid Influence over the National Security System In
Hybrid Threats: Myth or Reality? Consequences for the National and the European Security. Sofia: Sofia University “St. Kliment Ohridski, 2018.
Brundage, Miles, Shahar Avin, and Jack Clark. The Malicious Use of Artificial Intelligence: Forecasting, Prevention, and Mitigation. Future of Humanity Institute – University of Oxford, Centre for the Study of Existential Risk, Center for a New American Security, Electronic Frontier Foundation, Open AI, 2018.